Managing Multiuser Databases MCQ Questions and Answers

Home | Database | Managing Multiuser Databases

In this section we provide lots of objective question of Managing Multiuser Databases in Database Management System.

Page: 1/2

1) Locks placed by command are called ________ .

2) Which of the following locks the item from change but not from read?

3) 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?

4) A transaction for which all committed changes are permanent is called:

5) In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed.

6) Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?

7) The advantage of optimistic locking is that:

8) 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?

9) Which of the following refers to a cursor type where changes of any type and from any source are visible?

10) Which of the following disallows both dirty reads and nonrepeatable reads, but allows phantom reads?