What are the three lock types?

The three types are shared, update and exclusive. Shared locks allow two or more programs to read simultaneously but not change the locked space. An exclusive lock bars all other users from accessing the space. An update lock is less restrictive; it allows other transactions to read or acquire shared locks on the space.
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ajay ajjur

  • Dec 19th, 2006
 

3 types of locks are SHARE EXCLUSIVE UPDATE

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