Several SQL operations are performed by User 1 to access the Fee information for Bowling in the Act_Fee relation (shown

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answerhappygod
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Several SQL operations are performed by User 1 to access the Fee information for Bowling in the Act_Fee relation (shown

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Several SQL operations are performed by User 1 to access the Fee information for Bowling in the Act_Fee relation (shown in the exhibit). The first access returns a fee of 50. An unrelated SQL operation by another user updates the Bowling fee to 60. The second access by User 1 returns a fee of 60. What problem has occurred?
Several Sql Ope 1
Several Sql Ope 1 (139.1 KiB) Viewed 64 times
A. Rollback
B. Deadlock
C. Dirty read
D. No problem has occurred.
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