Extended Logic for Data
There are a several features that have been added to the Oracle database that are not
unique data structures, but rather shape the way you can use the data in the database:
the Rules Manager and the Expression Filter.
Rules Manager
The database has been continually extending the functionality it can provide, from
mere data storage, which still enforced some logical attributes on data, to stored procedures.
The Rules Manager, introduced with Oracle Database 10g Release 2, takes
this extension a step further.
Extended Logic for Data | 101
The concept behind the Rules Manager is simple. A rule is stored in the database and
is called and evaluated by applications. If business conditions or requirements
change, the rule covering those scenarios can be changed without having to touch
the application code. Rules can be shared across multiple application systems, bringing
standardization along with reduced maintenance across the set of applications.
You can also create granular rules that can be used in different combinations to
implement a variety of conditions.
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