# Sequences and identity columns
<a name="sequences-identity-columns"></a>

Sequences and identity columns generate integer values and are useful when compact or human-readable identifiers are needed. These values involve allocation and caching behavior described in the [`CREATE SEQUENCE`](create-sequence-syntax-support.md) documentation.

**Topics**
+ [Sequence manipulation functions](sequence-functions-syntax-support.md)
+ [Identity columns](sequences-identity-columns-overview.md)
+ [Working with sequences and identity columns](sequences-identity-columns-working-with.md)