Storage Manager (Cont.) The storage manager implements several data structures as part of the physical system implementation: Data files--store the database itself Data dictionary--stores metadata about the structure of the database,in particular the schema of the database. Indices--can provide fast access to data items.A database index provides pointers to those data items that hold a particular value. Database System Concepts-7th Edition 1.24 @Silberschatz,Korth and SudarshanDatabase System Concepts - 7 1.24 ©Silberschatz, Korth and Sudarshan th Edition Storage Manager (Cont.) ▪ The storage manager implements several data structures as part of the physical system implementation: • Data files -- store the database itself • Data dictionary -- stores metadata about the structure of the database, in particular the schema of the database. • Indices -- can provide fast access to data items. A database index provides pointers to those data items that hold a particular value