COMPUTING SEMINAR


Title : The Use of Object Databases as Data Stores for HEP
Speaker : D.Duellmann / IT & RD45
Date : Wednesday 13 May at 16:00hrs
Place : IT Auditorium, bldg 31/3-005
Organiser : G.Folger / IT

ABSTRACT

Starting from 2005 the LHC experiments will generate an unprecedented amount of data. Some 100 Peta-Bytes of event, calibration and analysis data will be stored and have to be analysed in a world-wide distributed environment.

Several R&D projects have been set-up at CERN to study the use of object oriented technology as a key technology of the LHC software systems. The RD45 project investigated different approaches to solve the data storage problems at LHC. The main focus soon moved to the use of Object Database Management Systems (ODBMS) as a central component.

This talk will give an overview of the main features of ODBMS systems and try to relate them to other technologies such as "light-weight" object managers, (object-)relational databases and object request brokers. It will present the experience gained from several prototype and production applications and briefly summarise the current use of ODBMS based systems in HEP.