Single-valued dependencies, Database Management System

Single-Valued Dependencies

A database is a collection of related information and it is therefore inevitable that some items of information in the database would depend on some other items of information. The information is either single-valued or multivalued. The name of a person or his date of birth is single-valued facts; qualifications of a person or subjects that an instructor teaches are multivalued facts. We will deal only with single-valued facts and discuss the concept of functional dependency.

Let us describe this concept logically.

 

 

Posted Date: 3/7/2013 1:45:25 AM | Location : United States







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