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Oracle APEX(Application Express)Hands-On Guide I
Description:
BISP is committed to provide BEST learning material to the beginners andadvance learners. In the same series, we have prepared a complete end-to endHands-on Beginners Guide for Oracle APEX. The document focuses on basickeywords, terminology and definitions one should know before starting OracleAPEX.Join our professional training program and learn from experts.
History:Version Description Change Author Publish Date0.1 Initial Draft Shiva Kant Pandey 10thJan 20130.1 Review#1 Amit Sharma 12thJan 2013
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Table of ContentsIntroduction ..................................................................................................................................... 3
Components Of Oracle Apex : ........................................................................................................... 3
Advantage: ....................................................................................................................................... 5
SQL Workshop as a component of Oracle APEX .............................................................................. 5
Creating a new Workspace & login inside it. ..................................................................................... 5
Working with component SQL Workshop : ..................................................................................... 12
[1] Working on Object Browser ....................................................................................................... 13
Creating a Table through Object Browser...................................................................................... 14
Creating lookup table .................................................................................................................... 20
[2] Working on SQL commands ...................................................................................................... 23
[3] working on SQL Scripts ............................................................................................................. 25
Create Tables Through Script ......................................................................................................... 26
Create Triggers Through Script ...................................................................................................... 30
[4] Working On Query Builder ........................................................................................................ 39
[5] Working with Utilities ................................................................................................................ 45
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IntroductionOracle Apex: Oracle Application Express is a rapid Web application development tool that lets youshare data and create applications. Using only a Web browser and limited programming experience,you can develop and deploy applications that are fast and secure.
Components Of Oracle Apex :It has primarily three components these are :
Application Builder :It helps to build following applications database applications websheet applications packaged applications etc.
SQL Workshop : It is used for the following purpose Browse , create & edit database objects Execute SQL and PL/ SQL statements Upload & run SQL scripts Export & import SQL scripts Build & save queries using Query builder
Administration : It is used to perform the administrative tasks such as
Manage Service Manage Users & Groups Monitor activity Manage Dashboards & reports
BackgroundOne popular misconception is that Application Express is merely new version of Web DB. MikeHichwa created Web DB, a successful web front-end for Oracle, but the development of Web DBstarted to move in a direction that diverged from Mike's vision. When tasked with building an
internal web calendar, Mike enlisted the help of Joel Kallman and started "Flows". They co-developed the Web Calendar and Flows, adding features to Flows as they needed them to developthe calendar. In the earliest days of Flows, there was no front-end for it, so all changes to anapplication were made in SQL*Plus via inserts, updates and deletes. In some ways APEX is anevolution of Web DB, but it was developed with new code and no upgrade path.
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HistoryEvolution of oracle application Express is described below in tabular form
ProductName
Version Released Notes
HTML DB 1.5 2004 First release
HTML DB 1.6 2004 Added themes
HTML DB 2.0 2005 Added SQL Workshop
ApplicationExpress
2.1January2006
HTMLDB was renamed to APEX. Version 2.1 of APEX wasbundled with the freeOracle Express Edition (XE) database.
ApplicationExpress
2.2 2006 Packaged Applications
ApplicationExpress
3.0 2007This version featured several new features,includingPDF Printing,Flash charting and AccessApplication Migration
ApplicationExpress
3.0.1 July 2007This version could also be installed into an Oracle XEdatabase.
ApplicationExpress
3.1Spring2008
This included a new major feature known as Interactive
Reporting (enabled end-users to customize a report withoutprogrammer intervention, using techniques such as filtering,sorting, group-by, choosing displayed columns, etc. Theuser can even save multiple versions of their customizedreports. The programmer can limit which features areenabled). Also added support for BLOB data type
ApplicationExpress
3.2 2009 Forms conversion
ApplicationExpress
4.0 June 2010
Some notable features are declarative Dynamic Actions(which allow reacting to changes on a page without thedeveloper having to write custom Java script) and Plugins(which allow developers to create custom components suchas items, regions and processes, that can be re-used acrosspages and applications). Also added Websheets and RESTfulWeb
http://en.wikipedia.org/wiki/Oracle_Express_Editionhttp://en.wikipedia.org/wiki/PDFhttp://en.wikipedia.org/wiki/Flash_chartinghttp://en.wikipedia.org/wiki/Flash_chartinghttp://en.wikipedia.org/wiki/PDFhttp://en.wikipedia.org/wiki/Oracle_Express_Edition8/12/2019 Oracle Apex Hands on Guide Lab
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ApplicationExpress
4.1August2011
Notable new features included improved (customized) errorhandling, use of ROWID for updates, a data upload featurefor end-users, and improved WebSheets (a hybrid of aspreadsheet and a Wiki, built using Apex itself).
ApplicationExpress 4.1.1
February2012
Notable new features included new theme (cloudy) andvarious templates.
ApplicationExpress
4.2October2012
Notable new features such as application builder for mobile,mobile and responsive themes, and HTML5 support.
ApplicationExpress
4.2.1December2012
Bug Fixes.
Application
Express 4.2.2 April 2013
Bug Fixes, Improved PDF printing, new Survey Builder
packaged application
Advantage: Fast growing technology Web-based Developers familiar with PL/SQL can use the same skill set when developing Apex
applications Easy to create mock-ups Easy to deploy (end user opens a URL to access an APEX application) Scalable (can be deployed to laptops, stand-alone servers, or Oracle RAC installations)
Server-side processing and validations Strong and supportive user community (especially Oracle APEX forum) Basic support for group development Free hosting of demo applications provided by Oracle Apex applications can run on the free Oracle Express Edition (XE) database Individual components of an application can be retrieved or identified using SQL
SQL Workshop as a component of Oracle APEX
Creating a new Workspace & login inside it.Step 1: Open internet browser & write "http://localhost:8080/apex/apex_admin " into the URLaddress bar & click Enter button to open Oracle Apex Admin login page .
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Step 2: Application Express Administration Services page would appear, provide the requiredcredential
Username = admin Password = ***********
Step 3:To create a new Workspace click on Create Workspace
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Step 4: Fill required fields to create new workspace Workspace name = BISP Work space ID = optional Workspace = optional Click Next
Step 5:Select schema Re- use existing schema ? = Yes (if choosing existing schema else choose NO ) Choose Schema Name = HR Click Next
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Step 6: Fill the required fields Administrator username = ADMIN Administrator Password = oracle First Name = abc last name = optional Email = [email protected] Click to Next
Step 7:Check confirm request & if everything is fine then click Create Workspace.
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Step 8:Workspace is created click Done
Step 9:Click on Logout
Step 10:Log out confirmation page is displaying so click on Return to login Page to login insideyour workspace .
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Step 11:To login inside work space complete required blank fields Workspace = BISP Username ADMIN Password = oracle Click Login to application express
Step 12:The password for this account must be changed & hence Enter current Password = oracle Enter new password = #Oracle123 Confirm New Password = #Oracle123 Click on Apply Changes
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Step 13:Password Changed successfully now click on Return
Step 14:Enter New Password = #Oracle123 & then click Login to application Express
Step 15:Observe that we have successfully entered inside BISP work space & ready to work oncomponents .
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Working with component SQL Workshop:
Step 16:Created Workspace named BHEL & logged in inside workspace through it
Step 17:Click on SQL workshop to Create , edit & manage object of Oracle database 11g
Step 18:Now SQL Workspace is again further divided into following components:
Object Browser SQL Commands SQL Scripts Utilities Restful services
Now Click on Object Browser to manage database objects.
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[1] Working on Object Browser
Step 19:Inside object browser we can do two things either modify or create following objects insideHR schema , So to Modify these objects click drop down menu located on left pane of the page &select one of the following1) Tables 2) Views 3) Indexes 4) Sequences 5) Types 6) Packages 7) Procedures 8) Functions9) Triggers 10) Database Links 11)Materialized Views 12) Synonyms
Step 20:To Create these objects click drop down menu located on Right pane of the page & selectone of the following & start creating object inside schema :1) Tables 2) Views 3) Indexes 4) Sequences 5) Types 6) Packages 7) Procedures 8) Functions9) Triggers 10) Database Links 11)Materialized Views 12) Synonyms
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Creating a Table through Object BrowserStep 21:Click SQL Workshop ---> click on Object Browser
Step 22:Now this page will appear so see at the right pane of page & click on create then selecttable to the drop down menu .
Step 23:Fill all the required field to create table inside HR schema Table Name = Student Preserve case = leave uncheckedColumn Name Type Precision Scale
ROLL_ID NUMBER - 5
NAME VARCHAR2 - 50
EMAIL VARCHAR2 - 50
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CONTACT_NUM NUMBER - 10
DOB DATE - -
PHYSICS_MARKS NUMBER - -
CHEMISTRY_MARKS NUMBER - -
MATHS_MARKS NUMBER - -
TOTAL_MARKS_OBTAINED NUMBER - -
Click on Next
Step 24:Choose Not populated select ROLL_ID(NUMBER) as primary key then click NEXT
Step 25:On the constraint page put radio button on Check then click on Next
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Step 26:Now before creating table it requests to confirm all the details specially schema & tablename so after confirming details click on Create Tableto create Student Table
Step 27:Successfully created Student Table into the HR schema & is visible on the left pane underTables inside Object browser.So for a particular table we can view & modify following:1) Table 2) Data 3) Indexes 4)Model 5)Constraints 6)Grants 7) Statistics 8) UI Defaults9)Triggers 10) Dependencies 11) SQL
Now these parameters are again sub categorized for example Table consists sub elements are :1) Add Column 2) Modify Column 3) Rename Column 4) Drop Column 5) Rename 6) Copy 7) Drop8) Truncate 9)Create Lookup Table
Now click Data
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Step 28:Since Student Table is Newly created & hence it does not contains data so to insert datainto it click on Data --> Insert Row
Step 29:Fill all the required fields to create rows of data . ROLL_ID = 01 Name = SHIVA PANDEY EMAIL = [email protected] CONTACT_NUM = 9876543210 DOB =23/03/1988 PHYSICS_MARKS = 98 CHEMISTRY_MARKS=95 MATHS_MARKS = 92 TOTAL_MARKS_OBTAINED=285 Then click to Create
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Step 30:Similarly complete another row by filling data as shown below then click Create
Now two rows are created successfully
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Step 31:Two count Rows in a table click on Data --> Count Rows then it will display total numberof rows in a table for example in my case Student table contains number of rows equal to 2 &hence Row Count = 2 .
Step 32: To drop a table click on Table ---> Drop , then follow the steps & drop your tablesuccessfully .
Step 33:As we have created Student table we can also like wise create other objects by simplyclicking on Create button located at the right side of the page inside object browser .
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Creating lookup tableStep 34: Open SQL Workshop--> Object Browser --> Then on left side select Table--> Click onEMPLOYEES then under Employees table click on Tablethen click Create Lookup Tableto createa new lookup table
Step 35:Select the column you would like to create a lookup table for. The selected column willbecome foreign key to the lookup table
Schema =HR Table name =Employees Show = VARCHAR column Types Column JOB_ID- varchar2 Click Next
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Step 36:Specify the new table you wish to create. This new table will store a normalized list ofvalues .
Schema =HR Table name =Employees Column to normalize = JOB_ID New Table Name = JOB_ID_LOOKUP New Sequence = JOB_ID_LOOKUP_SEQ Click Next
Step 37:Click Finish
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Step 38:Now see that we have successfully created a new JOB_ID_LOOKUP table which is nowvisible in the tables list s , so on clicking into JOB_ID_LOOKUP we can be able to see Table details This lookup table contains only two columns one for JOB_ID_ID as primary key & another forJOB_ID .
Step 39:Now open SQL Workshop ---> SQL commands , & write query for look up table Select * from job_id_lookup ; Then click to RUN
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Step 40:Another way to view the data & detail of lookup table is to navigate through ObjectBrowser --> Select Tables --> JOB_ID_LOOKUP --> Click on Data , so from here we can observethat JOB_ID_ID is in a sequence & is unique for every row that's why it is called primary key forthis table & foreign key for Employees table from where it is originated .
[2] Working on SQL commandsTo run sql query for insert , update & retrieve data from oracle database , we have another subcomponent called SQL commands & Oracle Apex made it feasible by integrating it on apex .
Step 41:Open SQL Workshop -> SQL Commands
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look this page will appear as shown below in snap
Step 42:Execute Select Query on Employees table inside SQL Command & click Run to obtain itsresult .
select first_name from employees where first_name like 'E%' Click RUN & also we have choice to save this query by clicking SAVE tab & can use it
anytime. also select Number of rows want to retrieve
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Look result of executed select query i.e this employees table contains only three names startingwith 'E' & these are Ellen , Elizabeth , Eleni & Click on Download to download the retrieved data &save it somewhere for future use .
Similarly another select query to query names starting with 'S' select first_name from employees where first_name like 'S%' Click RUN & also we have choice to save this query by clicking SAVE tab & can use it
anytime.
also select Number of rows want to retrieve
Result is shown below :
Likewise we can execute all queries on this SQL Command .
[3] working on SQL ScriptsOracle apex provided facility to run SQL scripts through SQL Scriptwhich is a sub component of SQL Workshop .
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Create Tables Through ScriptStep 43: Open SQL Workshop ---> Click on SQL Scripts
Step 44:Click on Upload to upload create table script .
Step 45:Click on Choose File to choose create table script file which is located somewhere in thesystem.
Step 46: Browse file & select V2_Teams_DB_CREATE file then click Open
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Step 47:Now look file is successfully uploaded & hence click on Upload Tab .
Script uploaded message is now displayed .
Step 48:Click on Run icon shown inside indicated red box.
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Step 49:A message prompt asking that you have requested to run the following script. Pleaseconfirm your request so click Run Now .
Step 50:Click File shown below View Results
Step 51:Check that all statements Processed without error & click download to download detail.
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Step 52:Open Object Browser page by clicking into SQL Workshop --> Object Browser, then selectTables from Top Down menu & observe that we have successfully imported tables into HR Schemaby simply uploading sql script file
Step 53:Also Created Sequence for various tables so Select Sequences & Click on ATTND_ID_SEQNow Check Details of Sequence .
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Create Triggers Through ScriptStep 54:Open SQL Workshop ---> Click on SQL Scripts
Step 55:Click on Upload to upload Triggers script .
Step 56:Click on Choose File to choose Triggers script file which is located somewhere in thesystem.
Step 57 :Browse file & select V2_Teams_TRIGGERS file then click Open
Step 58:Now look file is successfully uploaded & hence click on Upload Tab
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Step 59:Script uploaded message is now displayed .
Step 60:Click on Run icon shown inside indicated red box.
Step 61: A message prompt asking that you have requested to run the following script. Pleaseconfirm your request so click Run Now .
Step 62:Click File shown below View Results
Step 63: Check that all statements Processed without error & click download to download detail.
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Step 64:Open SQL Workshop ---> Click on Object Browser
Step 65:Select Triggers & click on it
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Step 66: List of Triggers are shown now Click onBI ATTENDANCES& Observe all Details of aselected Trigger.
Step 67: Also check that Students Table have no Data so inserting of data can be done throughtwo ways :
Insert data one by one by clicking Insert Rows from Sub menu of Data Inserting Data by uploading script
So i am going to upload data through script into Students table.
Step 68:Click on Upload to upload data insert script .
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Step 69:Click on Choose File to choose data Insert script file which is located somewhere in thesystem.
Step 70:Browse file & select V2_Teams_DB_INSERT file then click Open
Step 71: Now look file is successfully uploaded & hence click on Upload Tab
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Step 72:Script uploaded message is now displayed .
Step 73: Click on Run icon shown inside indicated red box.
Step 74:A message prompt asking that you have requested to run the following script. Pleaseconfirm your request so click Run Now .
Step 75:Click on File shown below the View Results
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Step 76:Check that all statements Processed without error & click download to download detail.
Step 77:To check whether data inserted through script is came into Students table , thereforeClick Data tab from students table . Data is successfully inserted
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Step 78:Check Sequence of this Students Table & Observe that last number of sequence is 5020.
Step 79:Click on Students Table ---> Click on Constraints
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Step 80:Constraints contains Sub elements Create , Drop , Enable & Disable.Basically this student table contains one primary key & one foreign key as shown by red boxes .Now to create a new constraint (unique key) click on Create
Step 81:Add Constraints
Constraint Name =UNQ_STDUSERID Constraint Type = Unique
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Unique Column1 =STDUSERID(VARCHAR2) Then Click to Next
Step 82:Click on Finish
Step 83: Open Sql workshop --> Object Browser --> Select Tables --> Students --> ConstraintsNow check here we have successfully created a unique id .
[4] Working On Query BuilderWe can build queries with the help of query builder which is provided by Oracle Apex.Step 84:Open SQL Workshop ---> Click on Query Builder to open it .
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Step 85:Click on DEPARTMENTS table & it will be available at the query builder space then selectthe columns which you want to retrieve through query by checking these boxes .& click Run
Step 86:See the Result & click on SQLtab
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Step 87: Since we have build Query successfully then next step is to save it for future use .So clickSavetab .
Step 88:Give Name = department_sql & click to SAVE
It will immediately display Detail of saved SQL query build into query builder , for exampleOwner , Name ,Description ,Updated by , Updated which is shown by the red box
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Step 89:Open SQL Commands by clicking on SQL Workshop --> SQL commands
Step 90:Click on Saved SQL to run the saved query build into query builder.
Step 91: On clicking Saved SQL it will display all the saved queries so choose one which likelygoing to execute . For example click on department _sql
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Step 92:Select whole query & when it looks blue as shown below Click on Run tab to execute query
Result of Executed Query is shown below :
Step 93:Open SQL Workshop ---> Click on Query Builder to open it
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Step 94: To build complex query in which various tables are involved click on Employees table ,JOBs table , JOB HISTORY table & make relation between these tables so check mark the boxeslike JOB_ID , MIN_SALARY , MAX_SALARY from JOBS table & START_DATE , END_DATE fromJOB_HISTOY & FIRST_NAME , LAST_NAME from EMPLOYEES table & CLICK to Run
Step 95: Click on Results to see the retrieved data.
Step 96:Click on SQL to see build SQL Query , now see we have successfully build complex querythrough Query Builider
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Step 97: Click On Savetab to save build Query .
Step 98: It will prompt for Save SQL so provide the required details Name = DEMO1 Description = Optional Click to Save
Step 99:Now Query is saved with the NameDemo1 so whenever we need to execute such query use Demo1
[5] Working with UtilitiesOracle Apex Provided us a component known as Utilities which further consists of sub components
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Query Builder ,Data Workshop , Generate DDL , Methods on Table , User Interface Defaults,Schema comparison, Object Reports , Recycle Bin . So these sub components performs varioustasks so in this document we will work only on Data Workshop .Step 102: Open SQL Workshop ---> Utilities
Step 100:Look at the Various Utilities & Click on Data Workshop to open it
Step 101:So from data workshop we can Load , Unload data & manage Repository so click on TextData
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Step 102:Since we have already created table through script now we have only to load data insideProjects table , so to load data into existing account table choose radio button on Existing table alsochoose Load From Upload file then click Next .
Step 103:Select the database schema and name of the table you would like to load data into Table Owner = HR Table Name = PROJECTS Click Next
Step 104:Click on Choose FileThen click on Next.
Step 105: Choose Project Data file from your system & then click to Open
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Now it is displaying Chosen file
Step 106:Fill all the required files & File & Separator both are mandatory so separator = ,(comma)Click Next
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Step 107:This page preview how your data will be loaded . match database column names withcolumn in the data . So choose PROJ_NAME in first column & PROJ_CLIENT into second columnthen click to Next
Now data imported & hence it is showing Text Data Load Repository
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Step 108:Open SQL Workshop ---> Object Browser ---> Tables ---> Projects---> Data . Observethattable is containing imported data & hence we have successfully loaded data into Projects tablethrough utilities , in a similar way we can unload tables from schema by using utilities .
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