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Managing Multiuser Databases
Which of the following locks the item from access of any type?
Implicit lock
Explicit lock
Exclusive lock
Shared lock
Correct Answer:
Exclusive lock
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More Questions from
Managing Multiuser Databases
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?
Which of the following occurs when one transaction reads a changed record that has not been committed to the database?
Which of the following occurs when a transaction rereads data and finds new rows that were inserted by a command transaction since the prior read?
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