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MCQs DBMS|UGC-NET|GATE|Computer Science

71.Which command is used to remove a table or index from the database in SQL?
A.Delete Table
B.Drop table
C.Erase Table
D.None of above
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72.A report generator is used to :
A.Update files
B.Print files on paper
C.Data Entry
D.None
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73.The modify operation is likely to be done after :
A.Delete
B.Look-up
C.Insert
D.None of above
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74.The database environment has all of the following components except :
A.Users
B.Separate files
C.Database
D.DBA
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75.If every non key attribute is functionally dependent on the primary key, then the relation will be in :
A.1NF
B.2NF
C.3NF
D.4NF
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76.Director’s Salary details are hidden from the employee, that is :
A.Conceptual level Hiding
B.Physical level data Hiding
C.External level data hiding
D.None of above
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77.Which of the following is record based logical model(s)?
A.Network Model
B.object oriented model
C.Relational Model
D.E-R Model
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78.The distinguishable parts of a record are called
A.Data
B.files
C.fields
D.All of above
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79.Embedded pointers provide
A.An inverted index
B.a secondary access path
C.a physical record key
D.all of above
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80.Which database handles full text data, image, audio and video?
A.Transaction database
B.Graphics database
C.Video on demand database
D.Multimedia database
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Author Does Not claim of any answer these answers are as per expert opinion


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