Do primary key values have to be unique? Do alternate key values have to be uni

Do primary key values have to be unique? Do alternate key
values have to be unique?

Question Posted / guest

1 Answers
7913 Views
I also Faced
E-Mail Answers

Do primary key values have to be unique? Do alternate key values have to be unique?..

Answer / guest

Primary key values must be unique; alternate key values need
not be.

Is This Answer Correct ?

12 Yes

2 No

Post New Answer

More VSAM Interview Questions

Can AMS commands be run from the TSO prompt ?

1 Answers IBM,

What is File Status in VSAM?

1 Answers IBM,

How do you initialize a VSAM file before any operation? a VSAM with alternate index?

2 Answers IBM,

I have three fields in a Variable VSAM file X(2) Y(10) occurs X times Z(02) Say for the first record X=2 then the length of the file is 2+(10*3)+2=34 second record, x=4 then 4+(10*4)+2=46 If any time if the field x is updated then the total length changes. Is it feasible? Is it

2 Answers

what is meant by dirty read in vsam?

0 Answers IBM,

Is it slower if you access a record through ALT INDEX as compared to Primary INDEX? Why?

1 Answers

What do you mean by dirty read ?

5 Answers

How is record management performed in vsam?

0 Answers

What is the function of linear dataset in vsam?

0 Answers

While designing vsam files,what is the best way to choose control interval size for the data and the index?