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Q. Key to represent relationship between tables is called
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Q. Which one of the following cannot be taken as a primary key ?
Q. When mapping a regular entity into a relation which of the following is true?
Q. A number of related records that are treated as a unit is called
Q. Which of the following is an advantage of partitioning?
Q. Which one of the following uniquely identifies the elements in the relation?
Q. Relations are:
Q. A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.
Q. In the data model schemas, the constraints that are can not be expressed directly are classified as
Q. Which of the following are integrity controls that a DBMS may support?
Q. When the primary key is null of the new tuple then the constraint violated is
Q. The definition of relation in which values and attributes are ordered in tuple is classified as
Q. In a relation
Q. When mapping a supertype/subtype relationship which of the following is true?
Q. In formal relational model, the set of indivisible values is called
Q. The key which specifies that two different tuples cannot have the same value is classified as
Q. The constraints that are applied on individual tuples and are verified whenever any tuple is modified or new tuple is inserted are called
Q. In mathematical term Table is referred as
Q. The column header of table in relational model terminology is classified as
Q. Which of the following improves a query's processing time?
Q. A relational database developer refers to a record as
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