Q. Which one of the following cannot be taken as a primary key ?

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Q. When mapping a regular entity into a relation which of the following is true?

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Q. A number of related records that are treated as a unit is called

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Q. Which of the following is an advantage of partitioning?

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Q. Which one of the following uniquely identifies the elements in the relation?

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Q. Relations are:

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Q. A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.

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Q. In the data model schemas, the constraints that are can not be expressed directly are classified as

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Q. Which of the following are integrity controls that a DBMS may support?

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Q. When the primary key is null of the new tuple then the constraint violated is

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Q. The definition of relation in which values and attributes are ordered in tuple is classified as

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Q. In a relation

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Q. When mapping a supertype/subtype relationship which of the following is true?

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Q. In formal relational model, the set of indivisible values is called

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Q. The key which specifies that two different tuples cannot have the same value is classified as

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Q. The constraints that are applied on individual tuples and are verified whenever any tuple is modified or new tuple is inserted are called

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Q. In mathematical term Table is referred as

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Q. The column header of table in relational model terminology is classified as

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Q. Which of the following improves a query's processing time?

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Q. A relational database developer refers to a record as

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