1. Database Management System
Lecture - 32
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2. © Virtual University of Pakistan
Application Programs
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Application Programs
Programs written to perform different requirement posed by the users/organization
The concern of the developer
Performed in parallel or after DBD
Tool selection is critical BUT
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General Activities
Data input programmes
Editing
Display
Processing related to activities
Reports
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User Interface
Almost all activities through UI
A gateway to DB world for end users
Main concern of users in an application; crucial
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User Interfaces
Text based
Graphical User Interface (GUI)
(Most Common, generally called Forms)
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Text Based UI
Adding a Record
Deleting a Record
Enrollment
Result Calculation
Exit
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Forms
Browser based
HTML, scripting languages, Front Page
Non-Browser/Simple
Visual Basic, Developer, MS Access
Form tools support simple built-in functionality
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9. Graphical User Interface
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10. User Friendly Interface
Beginners (What and How)
Intermediate (What)
Experts (Both)
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Tips
User friendly
Make users in charge
Don’t test users’ memory
Be consistent
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Tips
Should be processes based rather than the data structure based
Document structure (single page vs multiple pages)
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13. Entities and Relationships
Simple entity on a page
Hierarchies of entities
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Simple Entity
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15. Hierarchies of Entities
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Windows Controls
So many of them
Logical values
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Windows Controls
So many of them
Logical values
Set of values
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18. © Virtual University of Pakistan
Windows Controls
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19. © Virtual University of Pakistan
Set of Values
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20. © Virtual University of Pakistan
Numbers, Dates and Text
Normally text boxes
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21. Maintaining Data Integrity
Basic rules
Business rules
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22. Database Management System
Lecture - 32
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