What is functions of a database management system?

Answer 1

a set of principles concerned with determining which states are valid for a database.

Data Integrity within a relational database is that property of a database which ensures that it is and remains an accurate reflection the universe of discourse that it is attempting to model. This includes rules and restrictions to ensure the recording of correct data. It also involves the protection of data within the database. These rules are called integrity constrains.

These restrictions are used in almost every field of input to the database.

Examples of this is where you are given a drop box on a form to select from a list. This eliminates the chance of multiple spelling of a word. eg. colour color

Answer 2

Database System provides access to Information in a Database. It provides methods to Create, Read, Update & Delete information from the database.

Answer 3

A database management system maintains the data efficiently. It provides retrieval of data in the database . It provide modification of data in the database.

Answer 4

Information storage and retrieval.