quinta-feira, 18 de junho de 2015

First Look at System-Versioned Temporal Tables-Part 1: Creating Tables and Modifying Data

http://ift.tt/1JYFEQz

SQL Server 2016 introduces support for system-versioned temporal tables based on the ISO/ANSI SQL:2011 standard. A table without system versioning enabled holds only the current, most recent, state of its rows. You cannot query past, deleted or pre-updated states of rows. For the purpose of our discussion, I’m ignoring row-versioning capabilities related to concurrency control, like the multi-versioning concurrency control (MVCC) support of the In Memory OLTP engine, and the row versioning support of the snapshot and read committed snapshot isolation levels for disk-based tables.

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from SQL Server Pro http://ift.tt/1kCjeYg

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