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MCQs DBMS|UGC-NET|GATE|Computer Science

61.The Index consists of :
A.A list of keys
B.Pointers to the master list
C.Both (a) & (b)
D.None of above
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Explanation
62.Report generators are used to
A.Store data input by a user
B.retrieve information from files
C.Answer queries
D.Both (b) & (c)
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63.In a relational schema, each tuple is divided into fields called :
A.Relations
B.Domains
C.Queries
D.None of above
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64.The set of permitted values for each attribute is called its :
A.Attribute set
B.Attribute range
C.Domain
D.Group
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65.A DBMS consists of application programs called :
A.FORTRAN
B.AUTOFLOW
C.BPL
D.TOTAL
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66.A locked file can be :
A.Accessed by only one user
B.modified by user with correct password
C.is used to hide sensitive information
D.None
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67.Transaction X holds a shared lock R. if transaction Y requests for a shared lock on R :
A.result in deadlock situation
B.Immediately Granted
C.Immediately rejected
D.Granted as is released by X
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68.command used to select only one copy of each set of duplicable rows :
A.Select Distant
B.Select Unique
C.Select Different
D.None
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69.Which of following is the characteristics of a relational database model?
A.Tables
B.Treelike Structure
C.Complex logical relationship
D.records
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70.Which command is used to remove rows from a table?
A.Delete
B.Remove
C.Truncate
D.Both (a) & (b)
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Author Does Not claim of any answer these answers are as per expert opinion


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