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Managing Multiuser Databases

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

Read uncommitted
Read committed
Serializable
Repeatable read

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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?

Dirty read
Phantom read
Consistent read
Nonrepeatable read

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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?

Dynamic
Forward only
Static
Keyset

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Managing Multiuser Databases
A transaction is a series of actions to be taken on the database so that either all of them are performed successfully or none of them are performed at all.

True
False

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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
False

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Managing Multiuser Databases
Which of the following refers to a cursor type that when the cursor is opened, a primary key value is saved for each row in the recordset; when the application accesses a row, the key is used to fetch the current values of the row?

Static
Forward only
Dynamic
Keyset

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