Physical Structure of Management Information System. ... Even small companies generate large amounts of data that the system has to record, store for long-term use and back up in case of problems.

Some applications model data within database systems, in which case the database system handles the details of choosing data structures, as well as the algorithms to manage them. However, in many ...

This is all possible because the physical access paths to the data are not coded by programmers in application programs but are generated by the relational optimizer. Compare this with older, legacy ...

The actual composition and structure of database objects must be monitored continually and changed accordingly if the database becomes inefficient. No amount of SQL tweaking or system tuning can ...