Cube Storage: Planning Partitions (Business Intelligence Development Studio Perspective) - Page 7

November 18, 2009

Proactive Caching Settings

As we have noted in other articles within this series, when we use MOLAP or HOLAP storage, the data in the affected cube becomes stale the second the relational data source changes.  Proactive Caching is a feature in Analysis Services that allows us to specify when to process a measure group partition or a dimension as the data in the relational data source changes.  When Proactive Caching is implemented, Analysis Services handles maintaining updates on its own, based upon parameters we specify.  A common scenario for Proactive Caching would include a situation where we have a measure group partition where the latest data is added periodically, and then at some point the partition is merged with an existing partition.  The data for our partition is often determined based upon a transaction date.  For instance, we might want the partition updated hourly during the day with new transactions, and then at night we might merge the contents of the partition into a partition for the current week.  This approach would enable us to process the partition often, keeping it synchronized often with the relational data source, while also minimizing the amount of data that needs to be processed each cycle. 

Because Proactive Caching is established at the partition level, the need to provide this update capability is a partition planning criterion. We might, for example, choose to provide a partition for the data of the current year, wherein we might implement Proactive Caching, while we might create a partition, sans Proactive Caching, for historical data.

We can access Proactive Caching settings within the Business Intelligence Development Studio through any of the following means:

  • Clicking the ellipsis button (...) for the ProactiveCaching property value of a dimension, cube, measure group, or partition in the respective Properties window of Business Intelligence Development Studio;
  • Expanding a measure group in the Partitions tab of Cube Designer and clicking Storage Settings;
  • Expanding a measure group and selecting a partition in the grid for that measure group in the Partitions tab of Cube Designer and clicking Storage Settings;
  • Expanding a measure group and selecting a partition in the grid for that measure group in the Partitions tab of Cube Designer and clicking Storage settings on the Toolbar of the Partitions tab of Cube Designer.

1.  Ensure that the Internet_Sales_2003 partition of the Internet Sales measure group is selected, once again, on the Partitions tab.

2.  Select Cube -> Storage Settings ... from the menu atop the Partitions tab, as depicted in Illustration 35.

Select Cube -> Storage Settings ... from the Menu atop the Partitions Tab
Illustration 35: Select Cube -> Storage Settings ... from the Menu atop the Partitions Tab

We return to the Partition Storage Settings – Internet_Sales_2003 dialog that we encountered in an earlier section above. As we mentioned there, we can use Settings here to specify the proactive caching, storage, and notification settings for a dimension, cube, measure group, or partition. We can set storage type through the use of the setting slider that we see by clicking the radio button labeled Standard setting, and enabling the slider with its predefined settings for storage mode and proactive caching features. The predefined settings, along with descriptions, appear in Table 1 above.

3.  Click Cancel to dismiss the dialog.

4.  Exit Business Intelligence Development Studio, when desired.

Conclusion

In this article, we continued the general exploration of cube storage that we began in Cube Storage: Introduction, this time focusing upon partitions, which we initially introduced in Cube Storage: Introduction to Partitions. We noted that this article was one of several others in this subseries that explore various concepts surrounding partitions in Analysis Services. We discussed partition planning considerations and how they are important to partition design within our business intelligence solutions.

After discussing partition planning in general in Analysis Services, we explored each of several individual resource assignment and settings considerations in planning partition design within Analysis Services. Finally, for each of the resource assignment and settings considerations we discussed, we examined a respective example resource assignment / setting within the Adventure Works sample cube, from the perspective of the Cube Designer of the Business Intelligence Development Studio, where applicable.

About the Series ...

This article is a member of the series Introduction to MSSQL Server Analysis Services. The monthly column is designed to provide hands-on application of the fundamentals of MS SQL Server Analysis Services (“Analysis Services”), with each installment progressively presenting features and techniques designed to meet specific real-world needs. For more information on the series, please see my initial article, Creating Our First Cube.

» See All Articles by Columnist William E. Pearson, III

Introduction to MSSQL Server Analysis Services Series
Introduction to Security in Analysis Services
Cube Storage: Planning Partitions from a SQL Server Management Studio Perspective
Cube Storage: Planning Partitions (Business Intelligence Development Studio Perspective)
Cube Storage: Introduction to Partitions
Introduction to Cube Storage
Attribute Discretization: Customize Grouping Names
Attribute Discretization: Using the "Clusters" Method
Attribute Discretization: Using the "Equal Areas" Method
Attribute Discretization: Using the Automatic Method
Introduction to Attribute Discretization
More Exposure to Settings and Properties in Analysis Services Attribute Relationships
Attribute Relationships: Settings and Properties
Introduction to Attribute Relationships in MSSQL Server Analysis Services
Attribute Member Values in Analysis Services
MSSQL Analysis Services - Attribute Member Names
Attribute Member Keys - Pt II: Composite Keys
Attribute Member Keys - Pt 1: Introduction and Simple Keys
Dimension Attributes: Introduction and Overview, Part V
Dimension Attributes: Introduction and Overview, Part IV
Dimension Attributes: Introduction and Overview, Part III
Dimension Attributes: Introduction and Overview, Part II
Dimension Attributes: Introduction and Overview, Part I
Dimensional Model Components: Dimensions Part II
Dimensional Model Components: Dimensions Part I
Manage Unknown Members in Analysis Services 2005, Part II
Manage Unknown Members in Analysis Services 2005, Part I
Alternatively Sorting Attribute Members in Analysis Services 2005
Introduction to Linked Objects in Analysis Services 2005
Distinct Counts in Analysis Services 2005
Positing the Intelligence: Conditional Formatting in the Analysis Services Layer
Administration and Optimization: SQL Server Profiler for Analysis Services Queries
Mastering Enterprise BI: Time Intelligence Pt. II
Mastering Enterprise BI: Time Intelligence Pt. I
Design and Documentation: Introducing the Visio 2007 PivotDiagram
Actions in Analysis Services 2005: The URL Action
Actions in Analysis Services 2005: The Drillthrough Action
Mastering Enterprise BI: Introducing Actions in Analysis Services 2005
Mastering Enterprise BI: Introduction to Translations
Mastering Enterprise BI: Introduction to Perspectives
Introduction to the Analysis Services 2005 Query Log
Mastering Enterprise BI: Working with Measure Groups
Mastering Enterprise BI: Introduction to Key Performance Indicators
Mastering Enterprise BI: Extend the Data Source with Named Calculations, Pt. II
Mastering Enterprise BI: Extend the Data Source with Named Calculations, Pt. I
Process Analysis Services Objects with Integration Services
Usage-Based Optimization in Analysis Services 2005
Introduction to MSSQL Server Analysis Services: Named Sets Revisited
Introduction to MSSQL Server Analysis Services: Migrating an Analysis Services 2000 Database to Analysis Services 2005
Introduction to MSSQL Server Analysis Services: Introducing Data Source Views
Introduction to MSSQL Server Analysis Services: Reporting Options for Analysis Services Cubes: MS Excel 2003 and More ...
Introduction to MSSQL Server Analysis Services: Mastering Enterprise BI: Create Aging "Buckets" in a Cube
Introduction to MSSQL Server Analysis Services: Mastering Enterprise BI: Relative Time Periods in an Analysis Services Cube, Part II
Introduction to MSSQL Server Analysis Services: Mastering Enterprise BI: Relative Time Periods in an Analysis Services Cube
Introduction to MSSQL Server Analysis Services: Process Analysis Services Cubes with DTS
Introduction to MSSQL Server Analysis Services: Presentation Nuances: CrossTab View - Same Dimension
Introduction to MSSQL Server Analysis Services: Point-and-Click Cube Schema Simplification
Introduction to MSSQL Server 2000 Analysis Services: Manage Distinct Count with a Virtual Cube
Introduction to MSSQL Server 2000 Analysis Services: Distinct Count Basics: Two Perspectives
Introduction to MSSQL Server 2000 Analysis Services: Semi-Additive Measures and Periodic Balances
Introduction to MSSQL Server 2000 Analysis Services: Performing Incremental Cube Updates - An Introduction
Introduction to MSSQL Server 2000 Analysis Services: Partitioning a Cube in Analysis Services - An Introduction
Introduction to MSSQL Server 2000 Analysis Services: Basic Storage Design
Introduction to MSSQL Server 2000 Analysis Services: Derived Measures vs. Calculated Measures
Introduction to MSSQL Server 2000 Analysis Services: Creating a Dynamic Default Member
Introduction to MSSQL Server 2000 Analysis Services: Another Approach to Local Cube Design and Creation
Introduction to MSSQL Server 2000 Analysis Services: Introduction to Local Cubes
Introduction to MSSQL Server 2000 Analysis Services: Actions in Virtual Cubes
Introduction to MSSQL Server 2000 Analysis Services: Putting Actions to Work in Regular Cubes
Introduction to MSSQL Server 2000 Analysis Services: Reporting Options for Analysis Services Cubes: ProClarity Part II
Introduction to MSSQL Server 2000 Analysis Services: Reporting Options for Analysis Services Cubes: ProClarity Professional, Part I
Introduction to MSSQL Server 2000 Analysis Services: Using Calculated Cells in Analysis Services , Part II
Introduction to MSSQL Server 2000 Analysis Services: Using Calculated Cells in Analysis Services, Part I
Introduction to MSSQL Server 2000 Analysis Services: MSAS Administration and Optimization: Toward More Sophisticated Analysis
Introduction to MSSQL Server 2000 Analysis Services: MSAS Administration and Optimization: Simple Cube Usage Analysis
Introduction to MSSQL Server 2000 Analysis Services: Build a Web Site Traffic Analysis Cube: Part II
Build a Web Site Traffic Analysis Cube: Part I
Reporting Options for Analysis Services Cubes: Cognos PowerPlay
Reporting Options for Analysis Services Cubes: MS FrontPage 2002
Reporting Options for Analysis Services Cubes: MS Excel 2002
Introduction to MSSQL Server 2000 Analysis Services: Drilling Through to Details: From Two Perspectives
Introduction to MSSQL Server 2000 Analysis Services: Custom Cubes: Financial Reporting - Part II
Introduction to MSSQL Server 2000 Analysis Services Custom Cubes: Financial Reporting (Part I)
Introduction to SQL Server 2000 Analysis Services: Exploring Virtual Cubes
Introduction to SQL Server 2000 Analysis Services: Working with the Cube Editor
Introduction to SQL Server 2000 Analysis Services: Parent-Child Dimensions
Introduction to SQL Server 2000 Analysis Services: Handling Time Dimensions
Introduction to SQL Server 2000 Analysis Services: Working with Dimensions
Introduction to SQL Server 2000 Analysis Services: Creating Our First Cube








The Network for Technology Professionals

Search:

About Internet.com

Legal Notices, Licensing, Permissions, Privacy Policy.
Advertise | Newsletters | E-mail Offers