Q. A sub class having more than one super class is called:

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Q. A relation R={A,B,C,D,E,F} is given with following set of functional dependencies:

F={A→B,AD→C,B→F,A→E}.

Which of the following is Candidate Key?

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Q. Which statement is false regarding data independence?

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Q. In DBMS, deferred update means:

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Q. Which statement is false regarding data independence ?

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Q. Two phase protocol in a database management system is:

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Q. A relation R = {A, B, C, D, E, F} is given with following set of functional dependencies:

F = {A→B, AD→C, B→F, A→E}

Which of the following is candidate key ?

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Q. Immediate updates as a recovery protocol is preferable, when:

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Q. Which of the following statement is wrong ?

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Q. A subclass having more than one super class is called .................

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Q. A schema describes:

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Q. One approach to standardizing storing of data:

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Q. In a relational schema, each tuple is divided in fields called:

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Q. An embedded pointer provides:

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Q. A locked file can be:

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Q. An Entity - relationship diagram is a tool to represent:

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Q. Multi-valued dependency among attribute is checked at which level ?

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Q. A WINDOW into a portion of a data base is:

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Q. The E-R model is expressed in terms of:

(i) Entities
(ii) The relationship among entities
(iii) The attributes of the entities

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Q. Specialization is a ............... process.

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