July 2012
Intermediate to advanced
816 pages
27h 38m
English
Content preview from Programming Microsoft® SQL Server® 2012Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Column Store Databases
Column store databases have become very hot commodities in the data warehousing and BI markets. For those used to thinking of BI products as “dimensional,” the notion of a “column” simply sounds like relational technology being used in place of online-analytical processing (OLAP) technology. And while in a sense that is true, it’s not really the point. Column store databases are so-named because they store values for a column together rather than segregating data by row. At first, that may sound absurd. But when you look at the reasoning behind a column store and the ramifications of using one, you see that it greatly benefits the analytical query process.
Figure 15-1 displays the transformation from a row store structure ...
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