Openoffice.base by ritesh dansena
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Transcript of Openoffice.base by ritesh dansena
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OPEN OFFICE.ORG BASE BY-RITESH DANSENA
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What is Database ?
A database is a collection
Of logically related data
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REDUNDANCY
Duplication of data iscalled data redundancy
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Advantages of Database•Reduced Data redundancy•Controlled data inconsistency•Data sharing•Enforcement of standards•Enhanced data
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What is Database Management System ?
Database Management System(DBMS)Is a computer program that manages A databse effectively and efficiently.
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SOME POPULAR DBMSs
•Microsoft Access•Base of OpenOffic.org•MySQL•Oracle
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FEATURES OF BASE•Tables•Queries•Forms•Reports
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TABLE
A Table refers to a storageData pertaining to single
Object, subject or purpose.
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QUERY
A Query is a statement that gives you filterred data according to your
conditions and specifications.
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FORM
A Form is an interface in
user specified layout that
lets users view, enter, change Data directly
in the table.
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REPORT
A Report is an effective way to present data in aprinted format. It is a
formal, presentable printeddocument that lists data in
a formatted manner.
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STARTING Ooo BASETo start BASE, you may follow these steps :
From the applications menu, Select Office OpenOffice.org
Base
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FRONT PAGE OF OPENOFFICE.ORG BASE
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CREATING A NEW DATABASECreating a new databaseTo create a new database, click the arrow next to the New icon. In the drop-down menu, select Database(Figure 1). This opens the Database Wizard. You can also open the Database Wizard using File > New >Database.
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CREATING DATABASE TABLESTo work with tables, click the Tables icon inthe Database list, or use Alt+a. The threetasks that you can perform on a table arein the Tasklist (see Figure 2).
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USING THE WIZARD TO CREATE A TABLE
Step 1: Select fields.Step 2: Set field types and formats.Step 3: Set primary key.Step 4: Create the table.
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BASE window componentWhen we see a BASE window, there are variouscomponents that may be used for a variety of tasks.
These components are :1.Title Bar2.Menu Bar3.Toolbar4.Database Windows5.Object Buttons6.Status Bar
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FIELD
A field is a data element whichcan store one type of informationwhich is composed of characters.
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TYPES OF FIELD
•Fixed length Fields•Variable length Fields
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FIXED LENGTH FIELDS
Fixed length fields have fixed lengths i.e., they occupy fixed
number of bytes for every data element they store.
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VARIABLE LENGTH FEILDSVariable length fields
have verified field lengths i.e., field length is determined separately foe every data element
inside the field.
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Categories of Fixed length fields
Text data typesDate/Time data types Numeral data typesSpecial data types
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1.TEXT DATA TYPES
Text (fix) [CHAR]Text [VARCHAR]Text [VARCHAR-IGNORECASE]Memo v[LONGVARCHAR]
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2.DATE/TIME Data types
Date [DATE]Time [TIME]Date/Time [TIMESTAMP]
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3.NUMERAL DATA TYPES
Whole-Number data typesFractional values data types
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WHOLE-NUMBER DATA TYPES
Tiny Integer[TONYINT]Small Integer[SMALLINT]Integer[INT]Big Integer[BIGINT]
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FRACTIONAL VALUE DATA TYPES
Float[FLOAT]Real[REAL]Double[DOUBLE]Numeric[NUMERIC]Decimal[DECIMAL]
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4.SPECIAL DATA TYPESYes/No[BOOLEAN]Image[LONGVARBINARY]Binary[VARBINARY]Binary(fix)[BINARY]Other[OTHER]
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FIELD PROPERTIESEntry RequiredLengthDecimal valueDefault Value
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ENTRY REQUIRED field property
This property ensures that data cannot be skipped in the field for which this property
is set to Yes.
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LENGTH field property
This property determines the maximum length the data can
have in this field. The data inthe field cannot exceed this limit.
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DECIMAL PLACES FIELD PROPERTY
This property specifies thenumber of decimal places
permitted in this field.
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DEFAULT VALUE FIELD PROPERTY
The default value is used tospecify the default value for
a field or control.
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THANKYOU