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Managing Multiuser Databases
When two transactions are being processed against the database at the same time they are termed concurrent transactions.
True
Correct Answer:
True
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Managing Multiuser Databases
The size of the lock is referred to as the lock granularity.
An ACID transaction is one that is atomic, consistent isolated, and durable.
A durable transaction is one in which all committed changes are permanent.
An exclusive lock locks the item from change but not from read.
Database administration refers to a function that applies to the entire organization.
Locks placed by command are implicit locks.
The size of a lock is referred to as lock sizing.
The goal of database security is to ensure that only authorized users can perform authorized activities at authorized times.
Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed.
In optimistic locking, the assumption is made that conflict will occur.
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