what is primarykey?what is difference between primary key
and forign key?
Answer Posted / ipsita
Primary key we means a unique and ascending key, which is
the primary, access path for a PF and cannot contain null
values and foreign key the key in the dependent file.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
when would you use or not use this approach?
How to debug a batch job when it is in messagewait(mswg) status. I know the steps for batch ebugging, but im confusing with when we submit any job for batch debug we put in held state. So here also do same thing or any other way?
maximum number of subfiles that can defined in a rpg program for one display file is?
how many maximum spaces could be given in o specs?
what is the maximum number of fields under a record format of physical file?
can anybody give the interview questions list of RLU. plz mail me: dinesh_sati07@yahoo.com
how do you use exceptional write in c specs?
what opcode could be used to test an alphanumeric field for all numeric values?
what are the important factors in error message subfile ?
In Which Specs Arrays, Tables & Constants Are Defined?
how do you read changed records backward in subfile?
when would you prefer logical file than opnqryf?
is their a difference in cobol400 for the release 5.2 and 6.1 at the as400.
Apart from opening of a file do we have any other use of USROPN?
define the purpose/use for sflrna?