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Managing Multiuser Databases

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

Repeatable read
Read committed
Read uncommitted
Serializable

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Managing Multiuser Databases
A point of synchronization between the database and the transaction log is generally referred to as a stop point.

True
False

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Managing Multiuser Databases
Locks placed by the DBMS are explicit locks.

False
True

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Managing Multiuser Databases
Which of the following locks the item from change but not from read?

Shared lock
Implicit lock
Explicit lock
Exclusive lock

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Managing Multiuser Databases
Two transactions that run concurrently and generate results that are consistent with the results that would have occurred if they had run separately are referred to as serializable transactions.

True
False

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