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UP Police Computer Operator, SSC, IBPS Etc :: Computer Awareness Online Test-II

UP Police Computer Operator, SSC, IBPS Etc :: Computer Awareness Online Test-II

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              Computer Science : Relational model and Keys Online Test


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Q.1) Table is synonym with the term -
A. tuple
B. column
C. field
D. relation


Q.2) A key -
A. identifies a column
B. identifies a row
C. must always be composed of two or more columns
D. can only be one column


Q.3) An attribute is a(an) -
A. column of table
B. two dimensional table
C. row of a table
D. key of a table


Q.4) Which of the following is group of the one or more attributes that uniquely identifies a row -
A. tuple
B. determinants
C. relation
D. key


Q.5) A relation is considered a-
A. Column
B. One dimensional table
C. Two dimensional table
D. Three Dimensional table


Q.6) A functional dependency is a relationship between or among -
A. tables
B. relations
C. rows
D. attributes


Q.7) The different classes of relations created by the technique for preventing modification anomalies are called -
A. Functional dependency
B. Referencial integrity constraints
C. Normal Forms
D. None of the above


Q.8) Row is synonymous with the term -
A. record
B. column
C. relation
D. field


Q.9) A relationship is in the form if it is in BCNF and has no multivalued dependencies -
A. second normal form
B. third normal form
C. fourth normal form
D. domain/key normal form


Q.10) The primary key is selected from the -
A. Candidate key
B. foreign key
C. composite key
D. determinants






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