Go To Slide: Data Storage and Access in LHC Why new solutions for LHC LHC++ Layers Components of the Data Management Layer Components of the Data Management Layer (2) Object Database Features Object Persistency Transparent Access to Objects Navigation Between Objects Smart Pointers Object Clustering Concurrent Access A Code Example Objectivity/DB: Specific Features Objectivity/DB Architecture Physical Model and Logical Model Federated Database Components A Distributed Federation Data Replication Object Collections Object Naming Creating Persistent Classes Defining a persistent class DDL Restrictions DDL - Additional Features Schema Handling ODBMS Summary HepODBMS HepODBMS Layer Database Session Control Setting up a DB session using the HepDbApplication class Object Clustering Clustering by Class