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Some concept of Database Management Systems are Access Methods Layer, Basic Structure, Common Structures, Designing Systems, Join Processing, Modern Computers, Query Evaluation Techniques. Main points of this lecture are: Build Applications, Build Applications, Major Components, Management System, Advantages, Database, Main Database, Management Systems, Database Management Systems, Databases
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Design SQL Program
Design^ SQL^ Program
Best: Spend your time on design and SQL.
Worst: Compensate for poor design and limited SQL with programming.
format, designed to be shared by multiple users.
supports a query language, produces reports, and creates data entry screens.
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All Data
Database Engine Data Dictionary
Report Format
and Query
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All Data
Database Engine Data Dictionary Security
Form Builder
Report Writer
3GL Connector
Application Generator
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employee table
code will all run as before with no changes.
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Field Name Data Type Description
EmployeeID Number Autonumber.. TaxpayerID Text Federal ID LastName Text FirstName Text
... Phone Text ...
CellPhone Text Cellular...
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Developers
Database
Web Server
Web forms and reports
data
Users
Reports