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Managing Multiuser Databases

Managing Multiuser Databases
Which of the following refers to a cursor type where changes of any type and from any source are visible?

Keyset
Static
Forward only
Dynamic

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Managing Multiuser Databases
A cursor type in which the application can only move forward through the recordset is called:

static.
forward only.
dynamic.
keyset.

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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.

True
False

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

True
False

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Managing Multiuser Databases
Which of the following locks the item from access of any type?

Exclusive lock
Explicit lock
Implicit lock
Shared lock

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Managing Multiuser Databases
Locks placed by command are called ________ .

shared locks
implicit locks
explicit locks
exclusive locks

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