Basic HTML version of Foils prepared 23 June 1997

Foil 63 Database Design - I

From Overview of JDBC and its use with Microsoft Access UC Web Applications Certificate -- June 26 97. by Nancy McCracken(Sangetta Aggarwal, Udayan Parvate, Tom Pulikal)
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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