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Oracle 10g Column-Level Privacy

Virtual Private Database provides row-level security (RLS).  Oracle 10g will only enforce row-level access control when a SQL statement accesses security-relevant columns.  You can specify multiple columns in a policy.  If relevant columns are specified for an object in a policy, then VPD rewrites all SQL statements referenced to the object.

The following table employees in the Sample HR schema will be used in our VPD examples:

SQL> desc hr.employees

Get the complete story:

The above text is an excerpt from "Oracle Database 10g New Features: Reference for Advanced Tuning and Administration", by Rampant TechPress.  Written by top Oracle experts, this book has a complete online code deport with ready to use scripts. 

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http://rampant-books.com/book_2003_2_oracle10g.htm

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