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21 st November 2009. Project Gemini. PowerPivot. Self Service BI: . Bob Duffy Database Architect Prodata SQL Centre of Excellence. Speaker Profile – Bob Duffy. SQL Server MVP MCA for SQL Server (aka SQL Ranger) MCM on SQL 2005 and 2008 18 years in database sector, 250+ projects
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21st November 2009 • Project Gemini • PowerPivot Self Service BI: Bob Duffy Database Architect Prodata SQL Centre of Excellence
Speaker Profile – Bob Duffy • SQL Server MVP • MCA for SQL Server (aka SQL Ranger) • MCM on SQL 2005 and 2008 • 18 years in database sector, 250+ projects • Senior Consultant with Microsoft 2005-2008 • Regular speaker for TechNet, MSDN, Users Groups, Irish and UK Technology Conferences • On MCM 2008 exam working group • Database Architect at Prodata SQL Centre Excellence, Dublin
Why Self Service BI What is PowerPivot? PowerPivot for Excel PowerPivot for SharePoint Agenda
“We don’t know what is OLAP and dimensional modeling and we don’t care to know. Even relational modeling is a bit too hard.” “Don’t ask us to design or model anything in advance. We should just be able to load our data in and work. Exactly as do in Excel.” “It has to stay in Excel. We just won’t use another tool.” Can we compare the data to competitors data ? Can we analyze this data by tomorrow ? #1 The Business User
#2 The IT Perspective on using Excel “Spreadmarts” “Rouge Applications” “Data locked in Excel sheets” “Unsanctioned Information” “Stale Data” “Unsecure” “Multiple Versions of the Truth” “Ban Excel!” Arrrggg… #%^$%
Gemini Goals – Match Conflicting Twins… Simple and Smart Tool Business IT Scalable and robust Infrastructure PowerPivot
Introducing DAX • Expression Language based on Excel Syntax • Essential for Calculated Columns and Measures • Converted to MDX by PowerPivot AddIn • Example Functions: • RELATED(), RELATEDTABLE() • Filter(Table, Condition) • Distinct(Column) • Concatenation “&” • Notes: • Works on Columns NOT Rows • Consider “home” sheet carefully
Sits under Excel Web Access (EWA) Installation Gotchas Read the guides (on blogs) Needs Domain Accounts Easier with “new” farm Use Windows 2008 x64sp2 (patch for R2 released) Uses lots of RAM Limit of 2GB size (blob) Needs Enterprise Edition PowerPivot for SharePoint
Summary • Excel is user tool of choice • Balance between • User Power • IT Management • Bridges the Organizational Divide • Gemini is a part of the MS BI stack • Enables the Self-Service scenario • Enhances existing investments • CTP3 Available now • Ship next year
References/Blogs • Official Blog/Site • http://blogs.msdn.com/powerpivot/ • http://www.powerpivot.com/ • Analysis Services Team Blogs • http://powerpivotgeek.com • http://powerpivottwins.com/ • http://powerpivotpro.com/ • General Site • http://www.powerpivot-info.com/ • Online PowerPivot Labs • https://cmg.vlabcenter.com/default.aspx?moduleid=ad3bd3e9-8d2b-498d-94fa-e41e1b09730d