Basic HTML version of Foils prepared April 15 1997

Foil 22 Database Design - I

From Examples of JDBC -- Microsoft Access CPS616 -- Information Track of CPS -- Spring Semester 97. by Sangeeta Aggarwal,Tom Pulikal,Udayan Pravate(Nancy McCracken) *
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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