1
GATE CSE 2004
MCQ (Single Correct Answer)
+1
-0.3
Which level of locking provides the highest degree of concurrency in a relational database?
A
Page.
B
Table.
C
Row.
D
Page, table and row level locking allow the same degree of concurrency.
2
GATE CSE 2003
MCQ (Single Correct Answer)
+1
-0.3
Which of the following scenarios may lead to an irrecoverable error in a database system?
A
A transaction writes a data item after it is read by an uncommitted transaction
B
A transaction reads a data item after it is read by an uncommitted transaction
C
A transaction reads a data item after it is written by a committed transaction
D
A transaction reads a data item after it is written by an uncommitted transaction
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