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Explain Identity In Sql Server? |
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Answer» Identity (or Auto-Number) is a COLUMN that AUTOMATICALLY generates numeric values. A start and increment value can be set, but most DBA leave these at 1. A GUID column also generates numbers; the value of this cannot be controlled. Identity/GUID columns do not NEED to be indexed. Identity (or Auto-Number) is a column that automatically generates numeric values. A start and increment value can be set, but most DBA leave these at 1. A GUID column also generates numbers; the value of this cannot be controlled. Identity/GUID columns do not need to be indexed. |
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