The POOL project has been created to implement a common persistency framework
for the LHC Computing Grid (LCG) application area. POOL is tasked to store
experiment data and meta data in the multi Petabyte area in a distributed and
grid enabled way. First production use of new framework is expected for summer
2003. The project follows a hybrid approach combining C++ Object streaming
technology such as ROOT I/O for the bulk data with a transactionally safe
relational database (RDBMS) store such as MySQL. POOL is based a strict
component approach - as laid down in the LCG persistency and blue print RTAG
documents - providing navigational access to distributed data without exposing
details of the particular storage technology. This contribution describes the
project breakdown into work packages, the high level interaction between the
main pool components and summarizes current status and plans.Comment: Talk from the 2003 Computing in High Energy and Nuclear Physics
(CHEP03), La Jolla, Ca, USA, March 2003, 5 pages. PSN MOKT00