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Managing Multiuser Databases

Managing Multiuser Databases
The lost update problem is when User A reads data that have been processed by a portion of a transaction from User B.

False
True

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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 called ________ .

implicit locks
exclusive locks
shared locks
explicit locks

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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
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?

Keyset
Forward only
Static
Dynamic

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Managing Multiuser Databases
The size of a lock is called:

shared lock
exclusive lock
implicit lock
lock granularity

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