June 2018
Intermediate to advanced
478 pages
10h 52m
English
Content preview from IBM Db2 11.1 Certification Guide
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Column masks
If the business requirement is to limit access or mask data at the column level, you can do so by using column masks. A user with SECADM authority can create column masks on a table by using the CREATE MASK statement. The basic syntax is:
CREATE <OR REPLACE> MASK [MaskName] ON [TableName]FOR COLUMN [ColumnName] RETURN [CaseExpression]<ENABLE | DISABLE>
To which the following applies:
- MaskName: Identifies the name of the column mask, including the explicit or implicit qualifier.
- TableName: Identifies the name of the table on which to create the column mask. It must not be: a nickname; a created or declared global temporary table, view, alias, or synonym; a typed table; or a system catalog table.
- ColumnName: Identifies ...
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