Building a SSAS Tabular Model Database
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Building a SSAS Tabular Model Database

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Presentation from Code Mastery-Chicago. Steve Hughes, Principal Consultant

Presentation from Code Mastery-Chicago. Steve Hughes, Principal Consultant

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Building a SSAS Tabular Model Database Building a SSAS Tabular Model Database Presentation Transcript

  • Creating a Tabular ModelUsing SQL Server 2012 Analysis ServicesSteve HughesPractice Lead, Data and BI
  • Agenda» Basics of SQL Server 2012 Analysis Services» VS Multidimensional Model» VS PowerPivot» Creating a Tabular Model – AKA the Demo» Wrap Up
  • SQL Server 2012 Analysis ServicesOnly two models, really?
  • How many models in SSAS?» BISM (2012) » Business Intelligence Semantic Model» UDM (2005-2008 R2) » Unified Dimensional Model» Multidimensional Model» Data Mining Model» Tabular Model
  • Connectivity model or data model? Third-party Reporting Excel SharePoint applications Services PowerPivot Insights» Connectivity » BISM» Data BI Semantic Model Multi- Data model dimensional Tabular » Tabular Business logic MDX DAX » Multidimensional and queries Direct Data access ROLAP MOLAP VertiPaq Query Databases LOB Applications Files OData Feeds Cloud Services
  • VS Multidimensional ModelsWhat happened to my UDM and why isn’t it good enough?
  • Multidimensional model differentiators» Tabular » Multidimensional » In memory cache » File based storage » Loose structure » Rigid structure » Data does not need to move » It is best when data is put into a from source star schema » Relational model » Dimensional model » DAX » MDX » Simple » Complex » Smaller » Larger
  • VS PowerPivotIs a tabular model really PowerPivot for SQL Server?
  • PowerPivot differentiators» Tabular » PowerPivot » Visual Studio Project » Excel » Deploy to SSAS » Deploy to SharePoint » Size limited to memory » Size limited to 2GB » Supports Partitioning xVelocity »No partitions » DirectQuery and Vertipaq » Vertipaq only » Server Admin tools (e.g. SSMS) » Excel and SharePoint “Admin” » Row level & dynamic security » Workbook file security
  • Vertipaq is now xVelocity» Vertipaq has been rebranded into xVelocity » Vertipaq was too hard to spell and did not contain “x”. » xVelocity » In memory, highly optimized data storage and querying engine » Used in » PowerPivot » SQL Server Analysis Services – Tabular model » SQL Server – Column data store
  • Some Notes on DirectQuery» Why? » SQL Server data source only » No calculated columns » DAX support in the model is “limited”, basically can’t be used » Results have been different between DirectQuery and native Tabular » Cause by semantic differences between xVelocity and SQL Server» Why Not? » Security can be implemented at source and in model » No data refresh required
  • New Features in Both PowerPivot and Tabular» Hierarchies» KPIs» Perspectives» Diagram View (YAY)» New DAX functions» And more…
  • The Tabular ModelCreating the tabular model in SSAS
  • Building the tabular model» Source: AdventureWorks (not the DW version)» Plan » Create project » Add data source » Add measure » Add partition » And more …
  • Wrap UpQ & A and my contact info
  • Steve Hughes» Practice Lead with Magenic» Over 15 years with SQL Server» Chair of Minnesota SQL Server User Group (PASSMN)» PASS Regional Mentor for US-NorthEast Region» Contact Info » Blog: http://www.dataonwheels.com » Twitter: @DataOnWheels » Email: steveh@magenic.com
  • Thanks for joining us