what is identity columns in teradata
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Answer / yogi
Identity column is used in tables to get the unique
values.Values of the attribute is stored in DBC.idcol. If
ALWAYS and NO CYCLE option is used, then duplicate values
would be avoided.
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Answer / yuvaevergreen
Identity column is a system generated value. Used for row
uniqueness. If rows need to be unique, then ALWAYS option
should be used with NO CYCLE option. Separate DBC table
takes care of identity columns DBC.idcol.
| Is This Answer Correct ? | 1 Yes | 0 No |
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