International Business Machines Corporation

Benno Staebler

Knut Stolze

Steffen Koenig

Oliver Draese

Torsten Steinbach

Christian Zentgraf

Werner Ederer

Methods for optimizing data access in a row-oriented relational database containing data sets having attributes using a computer are presented the method including: causing a computer to analyze a database workload to determine an access frequency for each of the attributes; causing the computer to assign each of the attributes to a priority classes corresponding with the access frequency, where the priority classes include a higher priority class and a lower priority class, and where a higher priority class corresponds with a higher access frequency and a lower priority class corresponds with a lower access frequency; causing the computer to store the attributes in accordance with the classes, where the attributes assigned to the higher priority class are stored in a high priority storage medium, and where the attributes assigned to a lower priority class are stored in a low priority storage medium.

Method and system for optimizing data access in a database using multi-class objects

A method and computer system is provided for storing a data file in a peer-to-peer network of computer systems according to a selectable service level. Each computer system offers storage services at one of a set of service levels, the method comprising assigning to each of the computer systems respective peer identifiers from a metric space in such a way that the distance between peer identifiers of computer systems offering storage at the same service level is smaller than between peer identifiers of computer systems offering storage at different service levels.

Data storage method and system

A method, system, and computer program product for transaction-controlled graph processing and management are provided. The method includes notifying an external component of a database management system (DBMS) controlled transaction including multiple operations, and acquiring a DBMS transaction identifier associated with the transaction at the external component. The method further includes storing the DBMS transaction identifier as an external component transaction identifier, and receiving notification at the external component of events associated with the operations. The method additionally includes monitoring the events for an end-of-transaction operation, and passing notification of the end-of-transaction operation to an external routine.

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Holzgerlingen, Germany

Benno Staebler