Introduction to OLAP cubes My name: ZULFIQAR SYED Holds BSEE from Illinois Institute of Technology, Chicago, ILLINOIS. Holds BSEE from Illinois Institute of Technology, Chicago, ILLINOIS. MCP in ASP.net (C#) MCP in ASP.net (C#) SQL SERVER, ASP.NET, C#, DATA MINING, ANALYSIS SERVICES. SQL SERVER, ASP.NET, C#, DATA MINING, ANALYSIS SERVICES. CONTACT: CONTACT: –

In this session we will cover… OLAP cubes basics OLAP cubes basics –Why do we need olap cubes?? –Measures, Dimensions, Hierarchies Demo.. Demo.. –Define measures, dimensions etc. –Development environment –Report based on olap cube.

Meeting with the CEO… CEO: Developer, How much money we made last year? CEO: Developer, How much money we made last year? Developer: $1 billion dollars Sir ! Developer: $1 billion dollars Sir ! CEO: CEO: –How much did we make per year per quarter? –Which products did well and which failed? –What are the sales by region, country, by year, by quarter etc. etc. etc. Developer (thinking..) : Hmm.. What is the best way to do this?? :=( Developer (thinking..) : Hmm.. What is the best way to do this?? :=(

Excel Demo

Olap cube basics Measures Measures Dimensions Dimensions Hierarchies Hierarchies Levels Levels

Hierarchical Cube… Route Route –Non Ground Air sea –Ground Road rail

Measures and Dimensions.. Measures Measures –Look at Sales by Customers (Numerical) –Stored in fact tables (physical tables). –Examples: Sales amount, Shipping amount etc. Dimensions Dimensions –Look at Sales by Customers –Stored in relational tables called dimensional tables. –Example: Product, Time, Geography, etc. –Contains: Attributes, Hierarchies, and Members.

More on dimensions… Dimension Attribute: Dimension Attribute: –Table Column –Example: Product dimension, ProdName, ProdColor, etc. Members Members –Actual data value in an attribute. –Example: ProdName: Bike, Shirt, Bike Stand, Helmet etc. Hierarchies Hierarchies –Formed by Attributes. –Contain single or multi LEVELS. Example: Color is single level and Time (Year, Quarter, Month) are multi level

Demo..

Demo. Recap. Browsed dimensions, fact tables. Browsed dimensions, fact tables. Created a Dimension, hierarchy. Created a Dimension, hierarchy. Built and browsed a cube. Built and browsed a cube. Created cube driven SSRS report. Created cube driven SSRS report.

Name: ZULFIQAR SYED Recommendations: Recommendations: 1.Delivering Business Intelligence with Microsoft SQL Server 2005 by Brian Larson Delivering Business Intelligence with Microsoft SQL Server 2005Delivering Business Intelligence with Microsoft SQL Server Fast Track to MDX by Mark Whitehorn, Robert Zare, and Mosha Pasumansky Fast Track to MDXFast Track to MDX Please fill out the evaluations forms. Please fill out the evaluations forms. My Contact: My Contact: –