DB2 enforcing business rules on data

15 January,2011 by Tom Collins

When designing data and related business rules, there are a number of concepts available to the DBA . Consider the following in

 Primary Key definition

Foreign key definitions

User-defined distinct data types.

Nulls-allowed columns

Not null columns.

Column value constraint rules.

Before and after triggers.  – (UPDATE,INSERT,DELETE)

Generated row change timestamps.

Distinct Data

Unique indexes.

Non-unique indexes

 In summary , these concepts serve a purpose – and can be used effectively to maintain business data. This must be weighed up against performance and maintenance considerations

 Ref:Jack Vamvas(http://www.dba-db2.com)


Author: Rambler(http://www.dba-db2.com)


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