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Define the Two Phase Locking Protocol
This is a protocol that is used to make sure serializability of transactions. This protocol needs that every transaction issue lock and unlock requests in two phases:
Growing Phase: A transaction may acquire locks, but may not release any lock.
Shrinking Phase: A transaction may release locks, but may not acquire any new locks. Basically, a transaction is in growing phase. The transaction obtains locks as required. Just one time the transaction releases a lock, it comes in the shrinking phase, and it can issue no more lock requests. Two-phase locking makes sure conflict serializability, but does not make sure freedom from deadlock.
Benefits and Limitations od Data Models?
Hi is anyone well versed in accounting information systems available now to help me work through an important assignment due tomorrow at noon?
I need an ERD created for any original database(can be on anything). It needs to be 3NF. I then need all the CREATE STATEMENTS, INSERT STATEMENTS(anything you can think of as long
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what is the relationship between receipt and owner entities in computer sales and service company
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Differentiate OO development from structured development. Structured approach of problem solving is based upon the idea of decomposition of system into subsystem. In this appro
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