Ask
Login
0
13kviews
Explain the term super key, primary key, candidate key and foreign key giving suitable examples.
written 9.4 years ago by gravatar for meghalikalyankar meghalikalyankar • 2.3k modified 4.0 years ago by gravatar for pedsangini276 pedsangini276 • 4.8k
database management systems
ADD COMMENT EDIT
1 Answer
1
397views
written 9.4 years ago by gravatar for meghalikalyankar meghalikalyankar • 2.3k

A key allows us to identify a set of attributes that suffice to distinguish entities from each other. Keys also help uniquely identify relationships, and thus distinguish relationships from each other because no two entities in an entity set are allowed to have exactly the same value for all attributes. …

Create a free account to keep reading this post.

and 5 others joined a min ago.

ADD COMMENT EDIT
Please log in to add an answer.