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Table Of Contents
Microsoft SQL Server 2014 Business Intelligence Development Beginner's Guide
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SQL Server Analysis Services comes with two modeling technologies: multidimensional and tabular. In the previous chapter, you learned how to model a multidimensional OLAP cube. In this chapter, you will learn about tabular modeling.
SSAS Tabular loads data into an In-Memory engine called xVelocity (previously known as Aka Vertipaq). The In-Memory engine provides high-speed access to data, which helps provide very fast reports and dashboards. Tabular modeling allows you to create a table-based model from existing data (that comes from a data warehouse or any other source) and create a relationship between models. Note that the tabular model doesn't require a start schema relation, but this is always recommended if you wish to create a tabular model on the top of your data warehouse and start schema. Data Analysis Expression (DAX) is an expression language for SSAS Tabular, which helps you create calculations and measures...
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