Windows Azure and some other cloud table storage systems do not support auto-increment identity columns as Microsoft Sql Server does. Azure groups records by a dual key, the partition key and the row key. The partition key is a group of related records that should
There are a few scenarios where you may want to generate your own unique sequence identifiers. You may be using a database or big data store that does not offer an auto-increment sequence feature. Or maybe you just want a short memorable alpha numeric order