Mca Project Gui

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Punjab Technical University

A GUI Oracle Interface in Java

By

Jyotsna Vohra

Under the Guidance of

Ms Shalini Saxena

Submitted to the Softdot HI-Tech Educational & Training InstituteIn partial fulfillment of the requirements

For the degree of

Master of Computer Applications

Punjab Technical UniversityJallandhar


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ACKNOWLEDGEMENT

With utmost humility, we would like to express our gratitude towards the

indispensable guidance of our teacher (or guide) Ms Shalini Saxena who guided our

path through out the development of the project entitled A GUI Oracle Interface in

Java. We express our sincere thanks to her for accomplishment of the said project.

Project Team Member

Jyotsna Vohra

CERTIFICATE

This is to certify that the project report entitled A GUI Oracle Interface in Java submitted toPunjab Technical Universit y in partial fulfillment of the requirement for the award of thedegree of MASTER OF C OMPUT ER APPL I C AT I O NS (MC A) is an original work carriedout by Ms. JYOTSNA VOHRA enrollment no 11203250078 under my guidance. The matter

embodied in this project is authentic and is genuine work done by the student and has not beensubmitted whether to this university or to any other university/institute for the fulfillment of the

requirement of any course of study.


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Signature of the student: Signature of the Counsellor

'DWH'DWH

Name and Address Name, Designation andof the student Address of the Counsellor

(QUROOPHQW1R


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PROJECT PROPOSAL

Punjab Technical Universit y

Enrollment NoStudy Cent re6RIWGRW+L7HFK,QVWLWXWHE-mail [email protected] No 011 - 47002190-95

1. 1DPHDQG$GGUHVVRIWKH6WXGHQW-


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ABSTRACT

A GUI Oracle Interface in Java is developed under the domain of JAVA.

SQL plus is a tool provide by oracle for use specifically with its database

installations. It provides the user with full access to the database, Provided

that has relevant permissions and/or access rides for the task they which the

carryout. The problem with SQL plus, however, is that it is a Command line

interface. This is not so much a problem for the staff at the Organization, but

for some students, especially those with title or on computing experience, but

it is a difficult task to learn to use it.

The main objective of this project is to develop a GUI tool for the oracleInstallation. A GUI tool would be the best thing to implement as it is more user

can give, and most people who have used a computer have used a GUI in

some form or other, while most will not have used a command line interface.

Even if a Student has never used a computer before, they will be using a GUI

when using the computers at the organization, and so will have formed some

sort of mental model of how a GUI looks and works, and so will find it much

easier to adapt to a command line interface.

Currently the SQL plus tool can be accessed through one of twoMethods:

1. A terminal window on a UNIX/LINUX machine.

2. A telnet window on a PC within the organization.

The method of connecting is a command typed in by the user, who is

then prompted for a username and password. Once these are entered, the

user is able to the tables within their database, and create, edit, or delete data

or tables themselves, with in their home database. The permissions for the

students do not allow them access to other database or to any of the functions

used to administer the database it self.


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Index

Contents page no:

Chapter 11.Introduction

1.1 About Project 6

Chapter 22.Project Analysis

2.1 Project Requirements2.1.1 Functional Requirements 102.1.2 Non functional Requirements 112.1.3 Software 12

2.2 Configuration Architecture2.2.1 Two Tier Architecture 28

2.3 SDLC Approach 31

Chapter 33.Project Design

3.1 Data Flow Diagrams 343.2 Process Flow Diagrams 463.3 Data Model 47

3.3.1 Data Dictionary 483.4 Application Design

3.4.1 Modules 503.4.2 User Interface

3.4.2.1 Screens 54

Chapter 44. Testing

4.1 Black Box Testing 76

Chapter 5Conclusion 78

Chapter 6Bibilography 80


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ABOUT PROJECT

Introduction:

A graphical user interface(GUI) presents a pictorial interface to aprogram. A GUI gives a program a distinctive look and feel By

providing different applications with a consistent set of intuitive user interface

components. GUIs allows the user to spend less time trying to remember

which key tore sequences do what and spend more time using the program

in a productive manner. A GUI tool that is mainly used to identify the tables

that is the user is able to the tables within their database, and create, edit, or

delete data or tables themselves.

Purpose:

The purpose of this project is essentially to develop a tool that runs

within the domain, and can securely connect to the correct oracle database

depending on the users login and password.

Overview:

A GUI tool would be the best thing to implement as it is more user can

give, and most people who have used a computer have used a GUI in some

form or other ,while most will not have used a command line interface. Even if

a student has never used a computer before, they will be using a GUI when

using the computers at the organization, and so will have formed some sort of

mental model of how a GUI looks and works, and so will find it much easier to

adapt to a command line interface.

The method of connecting is a command typed in by the user, who isthen prompted for a username and password. Once these are entered, the

user is able to the tables within their database, and create, edit, or delete data

or tables themselves, with in their home database. The permissions for the

students do not allow them access to other database or to any of the functions

used to administer the database it self.


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Objective:

The main objective of this project is to develop a GUI tool for the oracle

installation. A GUI tool would be the best thing to implement as it is more user

can give, and most people who have used a computer have used a GUI in

some form or other ,while most will not have used a command line interface.

Scope:

The scope this project is essentially to develop a tool that runs within

the domain, and can securely connect to the correct oracle database

depending on the users login and password.

Firstly, what is needed is a tool that has two main elements: An area

where the user can enter SQL code; and an area where the user can view the

result of the query they have entered. The user will also require a means of

connecting to the database depending on which language the GUI is

developed in. this connection will have to be secured and reliable, to ensure

that it does not connect to another database accidentally, and that allcommands sent via to tool are processed correctly and committed to the

database correctly.

The connection process will require a user name and Password form

the user, and will not allow a connection if the user cannot provide these, or

provides an incorrect user name and/ Password. The tool it self should be

develop in a language, which is portable. By this, we do not intend to carry it

with us every where we go , that it must be in a language, which can run on

more than one platform. This allows the organization and any other users

who implement the tool to run it without the worry of not being able to make

use of it if the platform on which they use it becomes unavailable it future.

Also, it means that it can be implemented on both the PCs and the UNIX/

LINUX machines with in the organization.


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The development of the tool also needs to consider the human-

computer interaction aspects that come with the development of any GUI. Its

primary concern, and the one of the primary concerns of the project it self is to

make accessing the database more friendly user. This means developing a

tool which the user is comfortable user. A tool which the user can adapt to

with minimum training, and can learn to more quickly, using past experience

of other GUIs or simply by trial and error.

Existed System:

SQL plus is a tool provide by oracle for use specifically with its

database installations it provides the user with full access to the database,

provided that the has the relevant permission and/or access rides for the task

they which the carryout. The problem with SQL plus, however, is that it is a

command line interface. This is not so much a problem for the staff at the

organization, but for some students, especially those with little or no

computing experience, it is a difficult task to learn to use it.

Proposed system:The main objective of this projects is to develop GUI tool for the oracle


can give, and most people who have used a GUI in some form or other, while

most will not have used a command line interface. Even if a student has never

used a computer before , they will be using a GUI when using the computers

at the organization, and so will have formed some sort of mental model of how

a GUI looks and works, and so will find it much easier to adapt to command

line interface.

To understand the design principles of graphical user interfaces. To be

able to builds graphical user interfaces. It can execute the SQL queries

correctly and deliver the correct results. It is much easier to adapt to

command line interface. Students can easily access this GUI tool without any

computing experience.


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PROJECT REQUIREMENTS

Functional requirements:

First user create the database using login and password

by the system and manager.

In this database the user contain number of

Tables.

These tables contain the number of records.

These records contain number of fields.

In which the user can easily create tables and modify or

add the fields.

User can easily delete the tables using the

delete command

User insert values or select the values using the insert or

select command.

The user can modify the fields in the table like insert

values or delete the values or changes the values ,these

changes can be done by using the rollback, commit and

save point.


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Non Functional Requirements:

Software Specification

Language : JDK 1.4

Database : ORACLE 9i

Operating System : Windows2000

Programming Languages : Java, Swings

Hardware Specification:

Processor : Intel P-III based system

Processor Speed : 250 MHz

RAM : 256MB

Hard Disk : 30GB


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SOFTWARE:

JAVA

HISTORY OF JAVA:

Java language was developed by James Gosling and his team at sun

micro systems and released formally in 1995. Its former name is oak. Java

Development Kit 1.0 was released in 1996. To popularize java and is freely

available on Internet.

OVERVIEW OF JAVA:

Java is loosely based on C++ syntax, and is meant to be Object-

Oriented Structure of java is midway between an interpreted and a compiled

language. The Java compiler compiles Java programs into Byte Codes that

are secure and portable across different platforms. These byte codes are

essentially instructions encapsulated in single type, to what is known as a java

virtual machine (JVM), which resides in standard browser.

JVM verifies these byte codes when downloaded by the browser

for integrity. JVMs available for almost all OS. JVM converts these byte codesinto machine specific instructions at runtime.

Javas Magic: The Byte Code

The key that allows Java to solve both the security and the portability

problems just described is that the output of a Java compiler is not executable

code. Rather, it is Byte code. Byte code is a highly optimized set of

instructions designed to be executed by the Java run-time system, which is

called the Java Virtual Machine (JVM). That is, in its standard form, the JVM

is an interpreter for Byte code. This may come as a bit of a surprise.

Translating a Java program into Byte code helps makes it much

easier to run a program in a wide variety of environments. The reason is

straightforward: only the JVM needs to be implemented for each platform.


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Once the run-time package exists for a givensystem, any Java Program can

run on it. Remember, although the details of the JVM will differ from platform

to platform, all interpret the same Java Byte code

FEATURES OF JAVA:

Java is object-oriented language and supports encapsulation,

inheritance, polymorphism and dynamic binding, but does not

support multiple inheritances. Every thing in java is an object

except some primitive data types.

Java is portable architecture neutral that is java programs once

compiled can be executed on any machine that is enabled.

JAVA is distributed in its approach and used for Internet

programming.

Java is robust, secured, high performing and dynamic in nature.

Java supports multithreading. There for different parts of the

program can be executed at the same time

JAVA AND INTERNET:

Java is strongly associated with Internet and known as Internetprogramming language. Internet users can use java to create applet programsand run them locally using java enabled browser search as hot java. Applets

can be downloaded from remote machine via Internet and run it on local

machine.

JAVA AND WORLD WIDE WEB:

World Wide Web is an open-ended information retrieval system

designed to be used in the distributed environment. This system contains web

pages that provide both information and controls. We can navigate to a new

web page in any direction. This is made possible worth HTML java was meant

to be used in distributed environment such as Internet. So java could be easily

incorporated into the web system and is capable of supporting animation

graphics, games and other special effect. The web has become more

dynamic and interactive with support of java. We can run a java program on

remote machine over Internet with the support of web.


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JAVA ENVIRONMENT:

Java environment includes a large no. Of tools, which are part of the

system known as java development kit (JDK) and hundreds of classes,

methods, and interfaces grouped into packages forms part of java standard

library (JSL).

JAVA ARCHITECTURE:

Java architecture provides a portable, robust, high performing

environment for development. Java provides portability by compiling the byte

codes for the java virtual machine, which are then interpreted on each

platform by the runtime environment. Java also provides stringent compile

and runtime checking and automatic memory management in order to ensure

solid code.

JAVA VIRTUAL MACHINE:

Then we compile the code, java compiler creates machine code (byte

code) for a hypothetical machine called java virtual machine (JVM). The JVM

will execute the byte code and overcomes the issue of portability. The code iswritten and compile for one machine and interpreted all other machines. This

machine is called java virtual machine.


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SWINGS

Describe Swing classessuch as

1. JComponent

2. JFrame3. JPanel

4. JApplet

5. JRootPane.JScrollPane.JViewPort

Describe Buttons, CheckBoxes and RadioButtons

Describe Lists and ComboBoxes

Swing components:

Provides lightweight visual components

Contains replacement components for AWT visual components and

also complex components - trees and tables

While designing a GUI, there is a main window on which visual

components are placed

Swing components are in the javax.swing package

All Swing components start with J.

Frames

Frame is a top level container.

Provides place for other Swing components

JFrame components is used to create windows in Swing program

Its constructors are:

JFrame()

JFrame(String Title)

Components have to be added to the content pane and not directly

to the JFrame object

Example: frame.getContentPane().add(b);


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Panel

JPanel component is an intermeadiate container.

Used to group small lightwieght components together

JPanel objects have FlowLayout as their default layout

JPanel has the following constructors:

JPanel()

JPanel(LayoutManager lm).

Content pane and Applets

content pane makes the swing applets different from regular applets in

the following ways.

Components are added to the content pane of Swing applets, not

directly to the applet

The layout manager is set on a Swing applets content pane, not

directly on the applet

Default layout manager for Swing applets content pane is

BorderLayout whereas for regular applets, it is FlowLayout

Painting code is not directly put in a JApplet object.

Basic GUI Components

A form can be used for collecting information.

While creating GUIs, the text can be placed on the content pane

using labels.

To create elements on a GUI:

Create the element.

Set its attributes (size, color, font)

Position it.

Add it to the screen.


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Text Components

JText Component is the root class of all swing text components.

JTextField:

JTextField component allows us to enter/edit a single line of text.

The constructors of this class are: JTextField()

JTextField(Document doc, String text, int columns)

JTextField(int columns)

JTextField(String text)

JTextField(String text, int columns).

Text Area :

JTextArea components is used to accept several lines of text from the

user.

Implements the scrollable interface to activate scrollbars

JTextArea component can be created using:

JTextArea()


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JTextArea(Document doc)

JTextArea(Document doc, String text, int rows, int cols)

JTextArea(int rows, cols)

JTextArea(String text)

JTextArea(String text, int rows, int cols)

Buttons

Buttons trap user action.

JButton class descends from javax.swing.AbstractButton class

JButton object consists of a text label and/or image icon, empty area

around the text/icon and border

A JButton can be created using:

JButton()

JButton(Icon icon)

JButton(String text)

JButton(String text, Icon icon)

CheckBox:

CheckBox provides user with a set of options.

JCheckBox class has the following constructors:

JCheckBox()

JCheckBox(Icon icon)

JCheckBox(Icon icon, boolean selected)

JCheckBox(String text)

JCheckBox(String text, boolean selected)

JCheckBox(String text, Icon icon)

JCheckBox(String text, Icon, boolean selected)

Radio button:

By using the radiobutton any one option may be selected by the user .

By using the button group to create a group.


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JRadioButton object can be created by using:

JRadioButton()

JRadioButton(Icon icon)

JRadioButton(Icon, boolean selected)

JRadioButton(String text)

JRadioButton(String text, boolean selected)

JRadioButton(String text, Icon icon)

JRadioButton(String text, Icon icon, boolean selected).

Combo Box:

ComboBox is a combination of texfield and drop down list.

In Swing, combo box is represented by JComboBox class.

public JComboBox() this constructor creates a JComboBox with a

default data model.

public JComboBox(ComboBoxModel asModel) a combo box that

takes its items from an existing ComboBoxModel.

public JComboBox(Object [] items) a combo box that contains the

elements of the specified array.

Menus:

Menus show a list of items that indicate various tasks.

Select or click an option and another list or sub-menu opens up.

A Swing menu consists of a menubar, menuitems and menus.

Menubar is the root of all menus and menuitems.


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JMenuBar:

JMenuBar is a component that can be added to a container through a

JFrame.

Consists of a number of JMenus with each JMenu represented as a

string within the JMenuBar

JMenuBar requires:

SingleSelectionModel

keeps track of the menu currently selected

Look and feel class

Responsible for drawing the menu bar and responding to

events that occur in it.

JMenu:

JMenu is seen as a text string under JMenuBar while

it acts as a popup menu when the user clicks on it

JMenu has two additional classes:


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JPopupMenu

Used to display the JMenus menu items

Look and feel.

Responsible for drawing the menu in the menubar and

for responding to all events that occur in it.

JCheckBoxMenuItem:

Contains the checkboxes as it items.

Checkboxes are created using JCheckBox class

May have a text string and/or an icon

When a JCheckBoxMenuItem is clicked and released, the state of a

menu item changes to selected or deselected.

JRadioButtonMenuItem:

Select to checkboxes except that only one radiobutton can be

selected at any point of time.

May have a text string and/or an icon

Clicking a selected radio button does not change its state

Clicking an unselected radio button deselects the earlier selected

one.

Characteristics common to Swing Components:

Content - decides on the state of the component

Visual appearance - determines what the component should look like

Behavior - decides how the component should respond to events.

OVERVIEW OF JDBC:

JDBC stands for "Java DataBase Connectivity".


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It is an API (Application Programming Interface) which consists of a set

of Java classes, interfaces and exceptions

JDBC is a very popular data access standard.

consists of a set of classes and interfaces written in the Java

programming language.

provides a standard API for tool/database developers and makes it

possible to write database applications using a pure Java API.

The standard defined by Sun Microsystems, allowing individual

providers to implement and extend the standard with their own JDBC

drivers.

JDBC:

establishes a connection with a database

sends SQL statements

processes the results.

RDBMS (Relational Database Management Systems) or third-party

vendors develop drivers which adhere to the JDBC specification. Other

developers use these drivers to develop applications which access

those databases

SUN prepares and maintains the JDBC specification. Since JDBC is

just a specification (suggestions for writing and using JDBC drivers),third-party vendors develop JDBC drivers to this specification. JDBC

developers then use these drivers to access data sources.

The use of JDBC is there only to help you (a Java

developer) develop data access applications without having to learn

and use proprietary APIs provided by different RDBMS vendors. You

just have to learn JDBC and then you can be sure that you'll be able to

develop data access applications which can access different RDBMSusing different JDBC drivers.Perhaps the most common use of theseJava applications will be within a company or on an "Intranet," so this

might be called the Intranet scenario. For example, a company might

implement all of its corporate applications in Java using GUI building

tools that generate Java code for forms based on corporate data


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schemas. These applications would access corporate database

servers on a local or wide area network. However, Java applications

could also access databases through the Internet. The JDBC Guide

JDBC API:

The JDBC API supports both two-tier and three-tier models for

database access.

Two-tier model -- a Java applet or application interacts directly with

the database.

Three-tier model -- introduces a middle-level server for execution of

business logic:

the middle tier to maintain control over data access.

the user can employ an easy-to-use higher-level API which is

translatedby the middle tier into the appropriate low-level calls.

The basic classes of jdbc API:

The JDBC API is expressed as a series of abstract Java interfaces that

allow an application programmer to open connections to particular

databases, execute SQL statements, and process the results. The

most important interfaces are:

StatementCreates

Driver Manager

Driver

Connection

registers

Provides

Resultset

Resultset metadata

Provides


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java.sql.DriverManager which handles loading of drivers and provides

support for creating new database connections

java.sql.Connection which represents a connection to a particular

database

java.sql.Statement which acts as a container for executing a SQL

statement on a given connection .

java.sql.ResultSet which controls access to the row results of a given

Statement

JDBC API interfaces:

Callable statement.

Connection

DatabaseMetaData

Driver

PreparedStatement

ResultSet

ResultSetMetaData

Statement

StatementcreateStatement()

returns a new Statement object

PreparedStatement

prepareStatement(String)

returns a new PreparedStatement object

It is the subclass of the statement class

It compiles the SQL statement before execution and can also take

parameters.

Callable Statement

This class extends the prepare statement class and is used for

executing database stored procedures from a java Program.

These Statements are used to send SQL commands to the database

These are created via the connection object.


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JDBC Architecture:

The JDBC architecture is Divided in to 2 Parts

JDBC API (java.sql).

JDBC Driver Types .

The JDBC Steps

1. Importing Packages

2. Registering the JDBC Drivers

3. Opening a Connection to a Database

4. Creating a Statement Object

5. Executing a Query and Returning a Result Set Object

6. Processing the Result Set

7. Closing the Result Set and Statement Objects

8. Closing the Connection.

Things to Do in your Java Program:

Load the Drivers Establish the Connection

Create JDBC Statement

Execute the SQL Statement

Retrieve Values from the Result Set

Java Application

JDBC driver


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Three types of drivers:

JDBC Type 1 Driver (JDBC-ODBC Bridge plus ODBC Driver)

JDBC Type 2 Driver (OCI Driver)

JDBC Type 3 Driver (THIN driver)

Making a connection:

The second step in establishing a connection is to have the appropriate

driver connect to the DBMS.

The following line of code illustrates the general idea:

String url = "jdbc:odbc:Fred";

Connection con = DriverManager.getConnection(url, "myLogin",

"myPassword");

Create a JDBC statements:

A Statement object is what sends your SQL statement to the DBMS.

You simply create a Statement object and then execute it, supplying

the appropriate execute method with the SQL statement you want to

send. For a SELECT statement, the method to use is executeQuery .

For statements that create or modify tables, the method to use is

executeUpdate .

It takes an instance of an active connection to create a Statement

object. In the following example, we use our Connection object con to

create the Statement object stmt :

Statement stmt = con.createStatement();

Execute the SQL statements:

At this point stmt exists, but it does not have an SQL statement to pass

on to the DBMS. We need to supply that to the method we use to

execute stmt . For example, in the following code fragment, we supply

executeUpdate with the SQL statement from the example above:


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stmt.executeUpdate("CREATE TABLE COFFEES " + "(COF_NAME

VARCHAR(32), SUP_ID INTEGER, PRICE FLOAT, " + "SALES

INTEGER, TOTAL INTEGER)");

SQL (structured query language)

Oracle's SQL:

An Overview Structured Query Language (SQL) was introduced by

IBM as the language to interface with its prototype relational database. The

first commercially available SQL relational database management system was

management system, System R introducedin1979byOracle Corporation.

Today, SQL has become an industry standard , and Oracle Corporation

clearly leads the world in relational database Management system technology

Because SQL is a non-procedural language, sets of records can be

manipulated instead of one record at a time. The syntax is free-flowing,

enabling you to concentrate on the data presentation. Oracle has two

optimizers (cost- and rule-based) that will parse the syntax and format it into

an efficient statement before the database engine receives it for processing.

The database administrator (DBA) determines which optimizer is in effect for

each database instance.

SQL is an industry standard language for updating, and

getting information from, a database

The basic and most common SQL statements are: SELECT,

INSERT, UPDATE, DELETE

Transaction management is implemented in SQL using

COMMIT and ROLLBACK

Configuration Architecture

In regarding with our project we are using the two-tier architecture

Two-tier Architecture:-


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It also referred to as client-server architecture consists of a client

computer and a server computer, which interact through a well-defined

protocol. What part of the functionality the client implements, and what part is

left to the server, can vary. In the traditional client-server architecture, the

client implements just the graphical user interface, and the server implements

both the business logic and the data management; such clients are often

called thin clientsand this architecture is illustrated in the figure.

TWO-TIER ARCHITECTURE: THIN CLIENTS

Other divisions are possible, such as more powerful clients that

implement both user interface and business logic, or clients that implement

user interface and part of business logic. With the remaining part being

implemented at the server level: such clients are often called thick clients, and

the architecture is illustrated in figure.

APPLICATION

LOGIC

DBMS

N

E

T

W

O

R

K

CLIENT

CLIENT

. . . .


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TWO-TIER ARCHITECTURE: THICK CLIENTS

Compared to the single-tier architectures physically separate the

user interface from the data management layer. To implement two-tier

architectures, we can no longer have dumb terminals on the client side: we

require computers that run sophisticated presentation code.

Over the last ten years, the large number of client server development

tools such Microsoft visual basic and Sybase power builder have beendeveloped. These tools permit rapid development of client-server software,

contributing to the success of the client-server model, especially the thin-client

version.

The thick-client model has several disadvantages when

compared to the thin-client model. First, there is no central place to update

maintain the business logic, since the application code runs at many client

sites. Second, a large amount of trust is required between the server and the

clients. Third, it does not scale with the number of clients; it typically cannot

handle more than a few hundred clients. The application logic at the client

issues SQL queries to the server and the server returns the query result to the

client, where further processing takes place. Large query result might be

DBMS

N

E

T

W

O

R

K

CLIENT

APPLICA

TION

LOGIC

.

CLIENT

APLLICA

TION

LOGIC


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transferred between client and server. Fourth, thick-client systems do not

scale as the application accesses more and more database systems.

SDLC Approach

SDLC Approach (Waterfall Model):-

Structured analysis uses a technique called the system development

life cycle (SDLC) to plan and manage the systems development process

Although it is primary identified with structured analysis, sdlc describes

activities and functions that system developers typically perform, regardless of

how those activities and functions fit into particular methodology.

The SDLC includes following steps:

Systems planning

Systems analysis

Systems design

Systems implementation

Systems operation and support

Systems Planning

System planning usually begins with a formal request to the IT

department, called system Request that describes problems or desired

changes in an information system or a business process.

Systems Analysis

The first step is requirements modeling where you define and describe

business process .During the next tasks, data modeling, process modeling

and object modeling to develop a logical model of business process the

system must support.


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Systems Design

The purpose of system design is to create a blue print for the new

system that will satisfy all documented requirements .Whether a system is

being developed in house or purchased as a package.

During systems implementation, the new system is constructed.

Whether the developers used structured analysis or O-O methods, the

procedure is same programs are written, tested and documented and the

system is installed.

During systems operation and support, the IT staff maintains and

enhances the system. Maintenance changes correct errors and adapt to

changes in the environment, such as new tax rates.


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PROJECT DESIGN


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DATA FLOW DIAGRAMS

CONTEXT LEVEL:

LEVEL 1:

LEVEL 2:

Registration

SQLExecutio

Newuser

Validuser

Login

rocess

Database

Login

userA GUIOracle

tool

database

2.DDL

3.DML

4.TCL

LoginDatabase

1.Createdatabas

SQL

Execution


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2.1.1.2.Execute thecommand

2.1.1.1.Get theUsername andpassword

loginDataBase

Result

UserDetails

LEVEL 2.1.1:

2.1.2.1Get user

name

2.1.2.3Get the

Privilege

2.1.2.2Register the

user

New user

Sql grantstatements

2.1.2.4Execute thelogin

Data Base

privilege

LEVEL 2.1.2:


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LEVEL 2.2:

2.2.1.1.Getthe

Scheme name

LEVEL 2.2.1:

2.2.1.3.Getthe

Column

2.2.1.4.Execute thecreate command

2.2.1.2.Getthe

Ob ect name

Schemename

Objectname

Columndetails

result

Sql createstatements

Database

Create table:

2.DDL 2.2.2.Altertable

2.2.1.Createtable

2.2.4.Droptable

2.2.3.Truncatetable

Database


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LEVEL2.2.3:Truncate table

2.2.3.1.Get theScheme name

2.2.3.4.Execute thetruncate command

2.2.3.2.Get theObject name

2.2.3.3.Get theColumn details

Schemename

Objectname

Columndetails

result

Sql truncatestatements

LoginData base

LEVEL 2.2.2:Alter Table

2.2.2.4.Executethe alter command

2.2.2.3.Getthe

Column

2.2.2.2.Get the

Object name

2.2.2.1.Get the

Scheme name

LoginData base

Schemename

ColumndetailsSql alter

statements


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LEVEL 2.2.4:

DropTable

2.2.4.1.Getthe

Scheme name

2.2.4.3.Executethe

dro command

2.2.4.2.Getthe

Ob ect name

Schemename

Objectname

result

Sql dropstatements

logindatabase

LEVEL 2.3

DML STMTS

2.3.2.Insert

2.3.4.Delete

2.3.3.Update

2.3.1.Select

logindatabas

e

3.DML


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PROCESS FLOW DIAGRAMS


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DATA MODEL

Introduction

A data model is an abstract model that describes how data is

represented and used.

The term data model has two generally accepted meanings:

1. A data model theory i.e., a formal description of how data may be

structured and used.

2. A data model instance i.e., applying a data model theory to create a

practical data model instancefor some particular applications.

A data model theoryhas three main components:

The structural part: a collection of data structures which are

used to create databases representing the entities or objects

modeled by the database.

The integritypart: a collection ofrules governing the constraints

placed on these data structures to ensure structural integrity.

The manipulation part: a collection of operators which can beapplied to the data structures to update and query the data

contained in the database.

For example, in the relation model, the structural part is based

on a modified concept of the mathematical relation; the integrity part is

expressed in first order logic and the manipulation part is expressed using the

relation algebra, tuple calculus and domain calculus.

Data modeling is the process of creating a data model instance

by applying a data model theory. This is typically done to solve some

business enterprise requirement.


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Business requirements are normally captured by a semantic

logical data model. This is transformed into a physical data model instance

from which is generated a physical database.

Data Dictionary:-

A data dictionary is a set of metadata that contains definitions

and representations of data elements. Within the context of a DBMS, a data

dictionary is a read-only set of tables and views. Amongst other things, a data

dictionary holds the following information:

Precise definition of data elements

Usernames, roles and privileges

Schema objects

Integrity constraints

Stored procedures and triggers

General database structure

Space allocations

One benefit of a well-prepared data dictionary is a consistency

between data items across different tables. For example, several tables may

hold telephone numbers; using a data dictionary the format of this telephone

number field will be consistent.

When an organization builds an enterprise-wide data dictionary,

it may include both semantics and representational definitions for data

elements. The semantic components focus on creating precise meaning of

data elements. Representation definitions include how data elements are

stored in a computer structure such as an integer, string or date format. Data

dictionaries are one step along a path way of creating precise semantic

definitions for an organization.


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Initially, data dictionaries are some times simply a collection of

data base columns and the definitions of what is the meaning and type of the

columns contain. Data dictionaries are more precise than glossaries (terms

and definitions) because they frequently have one or more representations of

how data is structured. Data dictionaries are usually separate from data

models since data models usually include complex relationships between data

elements.

Data dictionaries can evolve into full ontology (computer

science) when discrete logic has been added to data element definitions.

LOGIN:-

COLUMN NAME DATA TYPE CONSTRAINTS

username Varchar2 Primary key

Password Varchar2


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Transaction Control Language:

TCL commands are used to control the (transactions) changes made

by data Manipulation Language commands. These statements include :

COMMIT :

It is used to end current transaction and make permanent all

changes performed in the transaction. i.e., it is used to store the data

permanently.

ROLLBACK :

Discards all changes made by the current transaction in the

database. An abnormal termination also causes the transaction to

ROLLBACK

SAVE POINT :

To get back the data up to certain point.


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USER INTERFACES

Screens:

If the user enters username and password then the user must click the submit

button and enters the home page but if a new user must click the registration

button and user goes to the create database page.In which user can create its

own database.

Welcome to home page

If the user enter correct username and password it enter into home page in

this he can click any one of the module .


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Creation of a Database:

If a new user clicks registration button in the loginpage it enter into this page

in which user can create its own database, in which user gives username andpassword to create new database.


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If new user get grant permissions it again enter login page to test whether

database created or not, if created it enter into home page,if not user must

again click registration button and goes to the create database page.

Welcome to Home page:

If the user is valid it enter into the home page and here user can click any of

the modules, firstly the user clicks the DDLStatements to create, alter,truncate

and to drop the table.


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Welcome to DDLStatements:

when the user clicks the DDLStatement button in home page it enter into this

page in which user can choose any of the sub modules like create , alter ,

truncate and drop.


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Welcome to Create table page:

In which user create the table by giving the table name , database name and

fields name, if user click the save button the table is saved in database


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Truncate table page:

In this user truncate the table ,if any fields to be removed this

command is used by giving the table name, database name and

fieldname.


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Welcome to DMLStatements:

If the user clicks the DMLStatements in home page the user enter

into this page in which can insert delete select and update the

values of the fields in the table


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Insert table:

In this user insert the values to the table which is created by user in

DDL page


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Delete Table:

In which user delete the fields in the table


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Update Table:

In this page if user want to change any values in the table it can be

used.


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Select Table:

In this user can select the values in the table by using this

command


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Welcome to TCL Statements:

If the user wants to control the transactions in the table by using

commit, rollback and savepoint.


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Commit :

If user wants to commit any commands in DML it can be used


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Rollback:

If the user does not want to change any saved points then the usercan use this command


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Save point:

If user wants to change some saved and unsaved points savepoint

can be used.


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TESTING


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CONCLUSION


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CONCLUSION

The main objective of this projects is to develop GUI tool for the oracle


can give, and most people who have used a GUI in some form or other, while

most will not have used a command line interface. Even if a student has never

used a computer before , they will be using a GUI when using the computers

at the organization, and so will have formed some sort of mental model of how

a GUI looks and works, and so will find it much easier to adapt to commandline interface.

Once developed the tool will have to be tested thoroughly for any bugs.

A through test of the tool should cover aspects as whether or not it connects

to the correct oracle database , whether or not it can execute SQL queries

correctly and deliver the correct results, and whether or not it can execute

database updates and connect them. It reduces the time complexity.

It easily for every user.

To understand the design principles of graphical user interfaces. To be

able to builds graphical user interfaces. It can execute the SQL queries

correctly and deliver the correct results. It is much easier to adapt to

command line interface. Students can easily access this GUI tool without any

computing experience.


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BIBILOGRAPHY


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BIBILOGRAPHY

WEB SITES:

www.java2s.com

www.sun.java.com

www.java.sun.com/doc/languageenvironment

www.bpbpub.com

Text books referred:

The Complete Reference by Herbert Schildt.

Systems Analysis and Design by Shelly/Cashman/Rosenbaltt.

Software Engineering by S.Rogers Pressman.

The programming language of oracle by Ivan Bayross.

Mca Project Gui

Documents

Transcript of Mca Project Gui