In the authorization graph, if DBA provides authorization to u1 which in turn gives to u2 which of the following is correct?
If DBA revokes authorization from u1 then u2 authorization is also revoked
If u1 revokes authorization from u2 then u2 authorization is revoked
If DBA & u1 revokes authorization from u1 then u2 authorization is also revoked
If u2 revokes authorization then u1 authorization is revoked
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This command performs which of the following action?
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2
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Which of the following is used to avoid cascading of authorizations from the user?
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3
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Which of the following is used to provide privilege to only a particular attribute?
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4
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The basic datatype char (n) is a _______ length character string and varchar (n) is _______ length character.
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5
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To remove a relation from an SQL database, we use the ______ command.
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6
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If we wish to grant a privilege and to allow the recipient to pass the privilege on to other users, we append the __________ clause to the appropriate grant command.
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7
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What type of statement is this?
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8
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An attribute A of datatype varchar(20) has the value “Avi”. The attribute B of datatype char(20) has value ”Reed”. Here attribute A has ____ spaces and attribute B has ____ spaces.
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9
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Which one of the following provides the ability to query information from the database and to insert tuples into, delete tuples from, and modify tuples in the database?
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10
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What type of statement is this?
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