Data obfuscation is a form of data masking where data is scrambled to prevent unauthorized access to data. This form of encryption results in unintelligible or confusing data. Data obfuscation techniques are used to prevent the intrusion of private and sensitive data.

TDV provides for masking of data at the column-based. This means that for selected Columns of data in a relational data organization, data can be obscured. For example, a table that contains a column for social security numbers can have the column data replaced with 10 asterisks (***-**-**** or **********).

Column filter policy server events are captured in the TDV log files.

If you are using row-based security policies in combination with column-based security policies, TDV applies the row-base policy before applying the column-based policy.