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Managing Multiuser Databases

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
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
An exclusive lock locks the item from change but not from read.

False
True

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Managing Multiuser Databases
The goal of database security is to ensure that only authorized users can perform authorized activities at authorized times.

False
True

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Managing Multiuser Databases
Locks placed by command are implicit locks.

True
False

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Managing Multiuser Databases
The size of a lock is called:

implicit lock
lock granularity
exclusive lock
shared lock

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