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Managing Multiuser Databases

Managing Multiuser Databases
Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed.

True
False

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Managing Multiuser Databases
Database administration refers to a function that applies to the entire organization.

True
False

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Managing Multiuser Databases
In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed.

Read committed
Read uncommitted
Repeatable read
Serializable

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Managing Multiuser Databases
The overall responsibility of the DBA is to facilitate the development and use of the database.

True
False

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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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Managing Multiuser Databases
The transaction log contains a copy of every database record (or page) after it has changed. These records are called before images.

True
False

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