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Managing Multiuser Databases
Which of the following locks the item from change but not from read?
Implicit lock
Explicit lock
Exclusive lock
Shared lock
Correct Answer:
Shared lock
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More Questions from
Managing Multiuser Databases
What is the overall responsibility of the DBA?
Which of the following locks the item from access of any type?
Which of the following allows dirty reads, nonrepeatable reads and phantom reads to occur?
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?
Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?
A transaction in which either all of the database actions occur or none of them do is called:
Dirty read, nonrepeatable, and phantom reads are not possible in this instance.
The size of a lock is called:
Locks placed by the DBMS are called ________ .
Which of the following refers to a cursor type where changes of any type and from any source are visible?
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