15 lines
364 B
Plaintext
15 lines
364 B
Plaintext
Types of conflicts:
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- rw
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- wr
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- ww
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Conflicts in timestamping are directed: the second of the transactions is said to conflict with the first, not vice-versa.
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When a cycle is formed in the transaction graph, the transaction is killed.
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BCNF: all determinants (left-hand sides of FDs) are candidate keys
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AB -> C
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C -> B
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C+ = {C, B} != R
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