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A relationship set is a set of relationships of the similar type.
For example, let consider the relationship among two entities sets course and student. Collection of all the instances of relationship opts forms a relationship set known as relationship type.
Degree
The degree of a relationship type is the number of participating entity types.
The relationship among two entities is known as binary relationship. A relationship among three entities is known as ternary relationship.
Likewise relationship between n entities is called n-ry relationship.
Niles Video Inc. wants to create a website for online sales of movies (DVD and videotapes). People will be allowed to register as customers on the website and to update their store
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The Maximum no of key fields that can be used in a header is?? 50
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