Special-Names in COBOL :: A Fancy thing in Vintage Language ?

Special-Names in COBOL :: A Fancy thing in Vintage Language ?

It bring you out of the dull zone when you come across things like Special-Names  in cobol, otherwise English like programming language which may bore some of us. Of course we are talking about COBOL here. Let’s create a scenario first. Let’s assume in some requirement we need to validate an Email Address i.e. we need to make sure that the Email Address contains only the allowed characters like a-z, Numeric 0-9, Special Symbols like “@”, “_” and “.” etc. ...

Static & Dynamic SQL in COBOL :: A Walk-Through

COBOL allows SQL queries to be executed both Statically and dynamically. However it’s often confusing that when Static SQL is to be used and when  Dynamic SQL. This will be quite clear once you know the exact difference between the two. Difference Between Static & Dynamic SQL: Static SQL SQL is static when we know the SQL Statements in advance i.e. we know what query to perform on which table under what conditions. For e.g. consider a table name “STUDENT” which ...

IEBPTPCH :: Merge PDS Members in a PS File.

IBM provides a utility, IEBPTPCH, to merge members of PDS (Partitioned Dataset) into a PS (Physical Sequential) file. However the sole purpose of this utility is to Print or Punch all or part of datasets (PS or PDS). So we will be needing at least one statement i.e. either PRINT or PUNCH in the sysin card. Since we are merging PDS members we will be specifying TYPORG=PO along with PRINT or PUNCH statements. TYPORG=PO indicates that the input dataset is ...

PS File Record Format :: Fixed block or Variable block?

Most commonly used file formats for a PS file are Fixed Block (FB) & Variable Block (VB). At times when we are uncertain of the file format, we can easily deduce that using LISTDS command with IKJEFT01 utility in JCL. LISTDS will list all the attributes for e.g. Record Format,Record length etc.  of the dataset you input with LISTDS command.

IGYWCLG :: COBOL File handling in JCL SYSIN Card.

In previous post we have seen how to execute a COBOL program (Add 2 numbers) in JCL Sysin Card. This post is concentrating more on how to accomplish a complex task for e.g. File handling using IGYWCLG. All we got to do is – write your COBOL program which handles certain files in COBOL.SYSIN. Only thing which differs is the way to write DD names for input & output files.