CSE MCQs :: DBMS MCQs
- To include integrity constraint in a existing relation use :
- Which of the following is not a integrity constraint ?
- Foreign key is the one in which the ________ of one relation is referenced in another relation.
- Domain constraints, functional dependency and referential integrity are special forms of _________.
- Which of the following is the right syntax for assertion?
- Data integrity constraints are used to:
- Which of the following can be addressed by enforcing a referential integrity constraint?
- _____________, express the number of entities to which another entity can be associated via a relationship set.
- An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as
- An entity in A is associated with at most one entity in B. An entity in B, however, can be associated with any number (zero or more) of entities in A.
Whatsapp
Facebook
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A.
All phone numbers must include the area code
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B.
Certain fields are required (such as the email address, or phone number) before the record is accepted
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C.
Information on the customer must be known before anything can be sold to that custome
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D.
When entering an order quantity, the user must input a number and not some text (i.e., 12 rather than 'a dozen')
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A.
Mapping Cardinality
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