Stephan Mueller

In-Memory Computing

Posted by Stephan Mueller on September 24, 2011

High performance in-memory computing will change how enterprises work. Currently, enterprise data is split into two databases for performance reasons. Disk-based row-oriented database systems are used for operational data (e.g….

Object Data Guides

Posted by Stephan Mueller on September 22, 2011

The in-memory database improves the retrieving performance of a business object by adding some redundancy to the physical data model. This redundancy represents a join index for querying sparse tree-shaped…

Group-Key

Posted by Stephan Mueller on September 20, 2011

A common access pattern of enterprise applications is to select a small group of records from larger relations, e.g. all line-items belonging to an order. The standard execution of such…

MapReduce

Posted by Stephan Mueller on September 19, 2011

MapReduce is a programming model to parallelize the processing of large amounts of data. MapReduce took the data analysis world by storm, because it dramatically reduces the development overhead of…