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SQL Server 2017 Developer???s Guide
book

SQL Server 2017 Developer???s Guide

by Dejan Sarka, Miloš Radivojević, William Durkin
March 2018
Intermediate to advanced content levelIntermediate to advanced
816 pages
19h 35m
English
Packt Publishing
Content preview from SQL Server 2017 Developer???s Guide

SQL Server 2016 and 2017 temporal tables and data warehouses

For analytical purposes, data warehouses have evolved. Data warehouses support historical data. You should not confuse a data warehouse's historical data with temporal data, the subject of this chapter. In a data warehouse, historical data means just archived non-temporal data from the past; a typical data warehouse holds from 5 to 10 years of data for analytical purposes. Data warehouses are not suitable for business applications because a data warehouse typically has no constraints.

Data warehouses have a simplified data model that consists of multiple star schemas. You can see a typical star schema in the following figure:

Star schema

One schema covers one business area. It ...

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Publisher Resources

ISBN: 9781788476195Supplemental Content