Analyzing the Current Database. Why Analyze To find out Does the current database support the...
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Transcript of Analyzing the Current Database. Why Analyze To find out Does the current database support the...
Analyzing the Current Database
Why Analyze
To find out Does the current database support
the organizations current needs Are there structural problems How does the database need to
change What kind of data does the
organization use How does it manage and maintain
that data
Types of Databases
Paper based—file systems Legacy databases Human knowledge
Key Rule
Do not adopt the current database structure as the basis for the new database structure
Conducting the Analysis
Three steps1. Review the way the data is
collected2. Review the manner in which the
information is presented3. Conduct interviews with users and
management
Process
Collect samples of paper forms and reports, also get screen shots of computer forms and reports
In the interviews ask users and managers about the forms and reports, to make sure you understand what each piece of information represents. Look for subjects or themes
(Entities) Look for characteristics (Attributes)
Interview Topics Types of data currently used How users use that data The samples of forms and
reports, clarification of data and details
Types of information required for daily work
Additional Information requirements (things that they may not be getting currently)
Future information requirements
List of Fields
Review and refine the list of characteristics
Determine whether there are new characteristics in any of the samples
Review value lists Review your list of
characteristics with users and managers