Spark Summit 2013 - Turning Data into Value - Ion Stoica


Comments

Post a Comment

Popular posts from this blog

SSRS Report Design: Best Practices

Introduction Microsoft® SQL Server™ Reporting Services is a comprehensive reporting tool. In using Reporting Services, you can design and deliver a wide range of reports, from simple tables to online free-form reports with graphical items and interactive links. Reporting Services can render reports for a variety of client-viewing formats, including HTML, PDF, Excel, and image formats. The wide variety of options and choices can be problematic for report authors who must make numerous decisions when choosing how to lay out a report. This paper provides a few guidelines to make these decisions easier and answers common questions.
Read more

SSAS OLAP Design - Best Practices

Introduction This paper outlines the recommended best practices for designing OLAP databases in Microsoft SQL Server 2005 Analysis Services to better meet the functional and performance needs of users. Designing a database for Online Analytical Processing (OLAP) databases is very different from designing a database for Online Transaction Processing (OLTP) and requires a different approach for achieving optimal results. The best practices recommendations are grouped into the following sections: Data Source Design Best Practices Dimension Design Best Practices Cube Design Best Practices Partition Design Best Practices Aggregation Design Best Practices Within each section, these best practices are ordered roughly by priority, where priority is a combination of how important the best practice is and how often you must worry about it. Major topics not covered include best practices for the design of calculations and for server management and operations.  These two topics are s...
Read more

To improve MDX Query performance use NonEmpty Function and use filter instead of IIF( IS NULL)

To improve MDX Query performance use NonEmpty Function and use filter instead of IIF( IS NULL) Function and  in Calculated measure WITH MEMBER [TEST1] AS SUM(LastPeriods(12,[dimTimeDimension].[Month].&[2009]&[12]), [Measures].[Gross Written Premium]) MEMBER [TEST2] AS SUM(LastPeriods(12,[dimTimeDimension].[Month].&[2008]&[12]), [Measures].[Gross Written Premium]) MEMBER [TEST3] AS SUM(LastPeriods(12,[dimTimeDimension].[Month].&[2007]&[12]), [Measures].[Gross Written Premium]) MEMBER [TEST4] AS SUM(LastPeriods(12,[dimTimeDimension].[Month].&[2006]&[12]), [Measures].[Gross Written Premium]) MEMBER [TEST5] AS SUM(LastPeriods(12,[dimTimeDimension].[Month].&[2005]&[12]), [Measures].[Gross Written Premium]) MEMBER [R12 LR] AS ([Measures].[R12 Claims Incurred WO IBNR] / [Measures].[R12 Gross Earned Premium ]) select { [Measures].[R12 LR] } ON COLUMNS , TOPCOUNT(filter(NONEMPTY( [dimCustomerDimension].[Full Name].children * [dimChannelD...
Read more