Computer Sciences MCQs Chapter 4 Class 12

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Computer Sciences MCQs Class 12: Enhance Your Skills

Computer Sciences MCQs Class 12 are essential for students preparing for NUST, UET, FAST, ECAT, NTS, and FSC board exams. These MCQs help students practice effectively, strengthen coding and analytical skills, and improve problem-solving abilities.




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Created on By Ali Durrani

Computer Sciences Ch 4 Class 12

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17. If a relation is in INF and the key consists of a single attributes then the relation is called.

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4. In 3NF, a non-key attribute must not depend on a(n)

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8. problems occurs when same name is used for two different attributes:

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16. A relation is in second normal form if and only if:

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19. A process in which it is being ensured that attributes are stored from where they belong

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15. In which of the following normal forms, any repeating group from the table is removed?

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9. problems occurs when same information is stored in two different ways:

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12. Data integrity is another form of data

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10. The process of converting complex data structure into simple and stable data structure is called: a –

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14. A foreign key constraint is also called

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18. If the value of a non-key attribute can be obtained simply by knowing the values of another non-key attribute, the relation is not in: (

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20. A process of analyzing the dependencies of attributes with in entities is called

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11. A functional dependency between two or more non-key attributes in a relation is called

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1. In 3NF, which form of dependency is removed? (

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5. Different attributes in two different tables having same name are referred to as (

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6. Referential integrity is applied on

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2. How many types of data integrity are there?

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3. The constraint states that in a relation no primary key value can have a null value.

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7. problems occurs when two different names are used for the same information?

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13. Integrity is concerned with the (

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