Centre of Competence on data warehouse Workshop Helsinki 24.9.2014 Database Cube and Browsing the Cube Mark Rantala.

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Presentation transcript:

Centre of Competence on data warehouse Workshop Helsinki Database Cube and Browsing the Cube Mark Rantala

Unit level Aggregate level Browsing Data warehouse (SQL-server) SAS-data Cube AS (analysis server) SAS-tabulation Cube Browser Excel/SAS-EG Cube Browser Excel/SAS-EG SAS Publication From Data Warehouse to Publication

Analysis Services overview: Microsoft’s application for creating multidimensional OLAP databases, also called Cubes part of the Business Intelligence Development Studio included with the SQL Server License for queries used MDX language Cube browsers: Excel, SAS-EG, Tableau, QlikView, XLCubed, ProClarity…

Why Store Data in a Cube? Analysis services is a platform for storing data, but instead of tables data is stored into cubes Why store data in cubes instead of tables Better query performance Fast, optimazed aggregations calculations Richer calculation possibilities, supporting stored measures, calculated measures and key performance indicator An easier to understand data model for the end user

Cube - Base on the Unit level data - Updates data: automatically or manually (ROLAP or MOLAP mode) - Constraints: maximum number for dimensions, attributes, cubes in database, measures groups, hierarchies in dimension, etc. is 2^31-1

Structure of Cube Fact table A key characteristic of a fact table is that it contains numerical data (facts) and usually large number of rows. Fact table A key characteristic of a fact table is that it contains numerical data (facts) and usually large number of rows. Dimension - Nace - Letter level - 2. digits - 3. digits - 4. digits - 5. digits Dimension - Nace - Letter level - 2. digits - 3. digits - 4. digits - 5. digits Dimension - Area - Country - Province - Municipality Dimension - Area - Country - Province - Municipality Dimension - Time - Year - Quarter - Month Dimension - Time - Year - Quarter - Month Additional Features - Stored measures - Calculated measures - Measure groups - Key performance indicators - User group perspectives Additional Features - Stored measures - Calculated measures - Measure groups - Key performance indicators - User group perspectives

Demo - International trade in services Statistics on international trade in services describe Finnish enterprises’ international sales and imports of services by service type and target country. Demofile

From the cube to publication

Thank you for your attention!