Marius Dumitru Sivakumar Harinath Gonzalo Isaza Akshai Mirchandani

 Introduction to Analysis Services  Analysis Services Engine Architecture  Current Testing Process & Challenges  Approaches to improve testing 2

 Multidimensional database  Multidimensional Expressions (MDX) queries  Server and client tools 3

INFRASTRUCTURE Client Application Analysis Services MDX query Query Parser Formula Engine Populate axes Compute cell data s FE Caches Subcube operations Calculation Engine Storage Engine s SE Caches Partition Data Query SE Evaluation Engine S e r i a l i z e r e s u l t s Metadata Manager Data Mining 4

 Functionality Testing  Databases used  Exercise different components  Formula Engine (Calculations & rules)  Performance and Stress testing  Acceptance criteria & reporting 5

 Functional testing ◦ Most common type of queries ◦ Recursive relationship definitions (P/C) complicate schema ◦ Execution path evaluation may change easily ◦ Size of query plan space ◦ Many calculations may apply to a single cell ◦ Size of cartesian product of dimensions ◦ Combination of features 6

 Performance testing ◦ Wide variety of databases ◦ Feature change has effect in other areas ◦ Profiling issues 7

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e1e2 IIF CrossJoin D1D2D3 Apply σ v is not null IIF(C, e1, e2) Naive Evaluation 100 1M Lookup 1M ½ M C 1M 15K 9 Ce2e1C Apply σ C==trueσ C==false Union IIF(C, e1, e2) Eager Evaluation 30K 20K 30K 20K 5K 10K 15K

 New tool (generate databases & queries)  Create db’s & Validate discovers with simple MDX queries  Different storage types  Combination of features 10

11 Send same Query Compare Responses MOLAP ROLAPHOLAP Data from AS dbData from Rel db Data from Mixed Sources Same database with different storage modes.

 New tool (generate databases & queries)  Create db’s & Validate discovers with simple MDX queries  Different storage types  Combination of features  Ability to influence execution path 12

 SQL 2008: Execution path control 13

 New tool (generate databases & queries)  Create db’s & Validate discovers with simple MDX queries  Different storage types  Combination of features  Ability to influence execution path  Databases with focused queries  Propose performance impact during upgrades 14

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