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Which of the following statement is wrong?
  1. Timestamp protocol suffers from more aborts.
  2. A block hole in a DFD is a data store with only inbound flows.
  3. Multivalued dependency among attributes is checked at 3 NF level.
  4. An entity-relationship diagram is a tool to represent the event model.
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    4
Correct answer is option 'C,D'. Can you explain this answer?
Most Upvoted Answer
Which of the following statement is wrong? Timestamp protocol suffers ...
STATEMENT- (I): TRUE
Timestamp protocol suffers from more aborts (suffer from cascading rollback).
STATEMENT- (II): TRUE
A block hole in a DFD is a data store with only inbound flows.
STATEMENT- (III): FALSE
Multivalued dependency among attributes is checked at 3 NF level because it is checked at 4 NF level.
STATEMENT- (IV): FALSE
An entity-relationship diagram is a tool to represent the event model because it is a tool to represent the data model.
Hence, the correct options are (C) and (D).
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Which of the following statement is wrong? Timestamp protocol suffers from more aborts. A block hole in a DFD is a data store with only inbound flows. Multivalued dependency among attributes is checked at 3 NF level. An entity-relationship diagram is a tool to represent the event model.a)1b)2c)3d)4Correct answer is option 'C,D'. Can you explain this answer?
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