Basic HTML version of Foils prepared 4 Feb 98

Foil 8 Database Design - I

From Overview of Microsoft Access used with Active Server Pages(ASP) CPS616 Technologies of Information Age -- Spring 1998. by Nancy McCracken and Sangetta Aggarwal
1 The relational database model was conceived in 1969 by E.F.Codd.
2 The model is based on mathematical theory viz. a database consists of a series of unordered tables (or relations) that can be manipulated using non-procedural operations that return tables.
3 Benefits of a relational database:
  • Data entry, updates and deletions are efficient.
  • Data retrieval, summarization, and reporting are efficient
  • Database behaves predictably.
  • Changes to the database schema are easy to make.
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