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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.
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
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Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
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