Database Management Systems
A database is a collection of information, such as facts about countries, statistics on demographics, a store’s inventory, and phone lists. A database system allows one to access, insert, delete, and modify information stored within a computer system. The term computer system is used as opposed to computer because external memory may be needed. Database systems often require large amounts of memory that greatly exceed the storage capacities of the computer’s main memory. The database management system (DBMS) performs operations on the information stored within a database. The DBMS is a program that contains a query language that allows database updates and retrievals. A DBMS can be viewed as a layer or abstraction built upon the computer system.
KeywordsDatabase System Relational Database Pacific Coast Query Language Database Management System
Unable to display preview. Download preview PDF.
- Date, C.J. (1995). An Introduction to Database Systems, Volume I, Sixth Edition, Addison-Wesley, Reading, MA.Google Scholar
- Ulman, J.D. (1988). Principles of Database and Knowledge-Base Systems, Volume I, Computer Science Press, Rockville, MD.Google Scholar
- Ulman, J.D. (1989). Principles of Database and Knowledge-Base Systems, Volume II: The New Technologies, Computer Science Press, Rockville, MD.Google Scholar
- Special Issue on Database Systems, Communications of the ACM, Oct. 1991, Volume 34, Number 10.Google Scholar