Oracle Database - What are the benefits to define a dimension in Oracle ?

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1 - About

Dimensions do not have to be defined.

However, if your application uses dimensional modeling, it is worth spending time creating them as it can yield significant benefits, because :

  • they help query rewrite perform more complex types of rewrite.
  • they are beneficial to certain types of materialized view refresh operations.
  • They are mandatory if you use the Oracle Database - SQL Access Advisor (Summary Advisor)

They are only mandatory if you use the Oracle Database - SQL Access Advisor (Summary Advisor) (a GUI tool for materialized view and index management) without a workload to recommend which materialized views and indexes to create, drop, or retain.


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