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प्रश्न
Discuss on Cardinality in DBMS.
संक्षेप में उत्तर
उत्तर
- It is defined as the number of different values in any given table column
- It Is defined as the number of items that must be included in a relationship.ie number of entities in one set mapped with the number of entities of another set via the relationship,
- Three classifications in Cardinality are one-to-one, one-to-many and Many-to-Many.
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ER Model
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संबंधित प्रश्न
An entity set that does not have enough attributes to form a primary key is known as ______.
Define Single valued attributes.
Define multi-valued attributes.
What is a Relationship and List its types?
List the basic concepts of ER Model with suitable example.
Discuss in detail on various types of attributes in DBMS.
