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Managing Multiuser Databases

Managing Multiuser Databases
The size of a lock is called:

shared lock
lock granularity
exclusive lock
implicit lock

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Managing Multiuser Databases
Which of the following refers to a cursor type where changes of any type and from any source are visible?

Forward only
Dynamic
Keyset
Static

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Managing Multiuser Databases
Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?

Phantom read
Consistent read
Nonrepeatable read
Dirty read

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Managing Multiuser Databases
The size of a lock is referred to as lock sizing.

True
False

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Managing Multiuser Databases
Dirty read, nonrepeatable, and phantom reads are not possible in this instance.

Serializable
Read uncommitted
Repeatable read
Read committed

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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.

False
True

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