ISRO Quiz 2023 14

Consider the following relations and query:

Which of the following is equivalent to the above query ?

Consider the following table data:

How many numbers of rows will be there in the result of following query output?

Select From Table1

Where not exists (Select * From Table2 Where );

Consider a non serial schedule S has executed in the following order.

, Commit3 (C), Rollback1.

The above given schedule is

Consider a schedule S given below:

R1(A); W1(A); W2(B); W3(C); R1(D), W2(D);

Which of the following statements are true about the schedule S?