what is the difference between adding keys & constraints
into a phisical file
Answer Posted / jherie
A key field defines the order in which the records of a PF
member will be sorted (ascending or descending).
On the other hand, constraints, such as UNIQUE, defines
which key field values or records are valid/allowable to be
written into a file. UNIQUE prevents a record with
duplicate key field values to be written into a PF.
| Is This Answer Correct ? | 25 Yes | 0 No |
Post New Answer View All Answers
How many maximum record format a logical file have?
How to read a pf in reverse(from last record to first) using cl?
Suppose I have a pf,it contains 5 members,how to access particular member data from logical file ?and what is the use of member in pf?
There is one string as A B C and wanted to display string as Shri A Shri B Shri C, how we can do this in sql? If we have around 100 values in string like this, each value should be displayed with initials as Shri.
How to update physical file using logical file with example?
What is open data path?
I have physical file with 100 records,there is no any duplicate records in this pf.based on this pf one logical file I have used.but this lf is viewing only 80 records only of that pf?what is the reason for this?
Where the QTEMP library will get created? if the the answer is QSYS, then howcome more than one job can create same library name(QTEMP) in QSYS? what is the uniqueness of QTEMP? For example, run the below command in different workstation WRKOBJ QSYS/QTEMP And take 8 in the option to check the description. both will have different info. so where(which LIB) exactly the QTEMP is stored?
Last statement of any rpg program is lr?
What is FORMAT keyword and its use?
Suppose I have a pf, it contains 5 members, how to access particular member data from logical file? What is the use of member in pf?
What is the use of member in pf?
What is the interactive job?
How to change the batch job to interactive job?
How to find the list of source physical files in a library?