Question

Define Dependency and explain?

Answer 1

DEPENDENCY

In the area of computer science known as dependency theory, a join dependency is a constraint on the set of legal relations over a database scheme. A table is subject to a join dependency if can always be recreated by joining multiple tables each having a subset of the attributes of .

Answer 2

$\huge\red{Answer}$

Data dependency means that one/more attribute uniquely identifies other attributes of a relation. in more simple terms we can say that some data values are dependent on other data values in order to get recognized.

HOPE IT HELPS YOU !!