Semantics of a runtime adaptable transaction manager

Database Management Systems (DBMSs) that can be tailored to specific requirements offer the potential to improve reliability and maintainability and simultaneously the ability to reduce the footprint of the code base. If the requirements of an application change during runtime the DBMS should be adapted without a shutdown. Runtimeadaptation is a new and promising research direction to dynamically change the behavior of a DBMS. Especially the adaptation of the Transaction Manager (TM) states a challenge. In this paper, we present the session semantics of a runtimeadaptable TM. We define preliminaries and assumptions to activate the TM during sessions from a conceptual point of view. The advantages and disadvanteges of different approaches are discussed, especially regarding the occurence of ANSI SQL phenomena. From a technical point of view, we define requirements for the architecture of the TM and the DBMS that arose in our prototype. Categories and Subject Descriptors H.2.4 [Dat...

• Type: Conference
• Year: 2009
• Where: IDEAS
• Authors: Florian Irmert, Frank Lauterwald, Christoph P. Neumann, Michael Daum, Richard Lenz, Klaus Meyer-Wegener
• Keywords: Database, Database Management, Database Management Systems, IDEAS 2009, Sql Phenomena