Olap introduction

An Introduction to OLAP And Data warehouse Ashish Awasthi

Overview ,[object Object],[object Object],[object Object],[object Object]

OLAP: 3 Tier DSS * Data Warehouse Database Layer Store atomic data in industry standard Data Warehouse. OLAP Engine Application Logic Layer Generate SQL execution plans in the OLAP engine to obtain OLAP functionality. Decision Support Client Presentation Layer Obtain multi-dimensional reports from the DSS Client.

What is OLAP? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is OLAP Cont… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

OLAP Servers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Different Flavors - MOLAP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Different Flavors - ROLAP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Industry Trends - HOLAP ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Multidimensional Database Architecture MDDB Source Databases ETL Metadata Repository Data Modeling Tool Warehouse Admin Tool RDBMS Local Metadata Local Metadata Data Access Tools Data Access Tools

APIs and Query Languages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MDX - Query Example ,[object Object],[object Object],[object Object],SELECT { [Measures].[Store Sales] } ON COLUMNS, { [Date].[2002], [Date].[2003] } ON ROWS FROM Sales WHERE ( [Store].[USA].[CA] )

XMLA – XML for Analysis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Top OLAP Vendors MOLAP : Hyperion (Arbor Essbase), Oracle Express ROLAP : Informix MetaCube, Microstrategy DSS Agent HOLAP : Microsoft Analysis Services, MicroStrategy DSS Agent, SAP AG

Microsoft Analysis Service ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Microsoft Analysis Service Cont… ,[object Object],[object Object],[object Object]

Microsoft Analysis Service APIs ,[object Object],[object Object],[object Object]

Mondrian ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Mondrian ,[object Object],[object Object],[object Object],[object Object],[object Object]

Mondrian Client Access API ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Olap introduction

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Olap introduction