Validating date in cobol. IBM MAINFRAME & MVS FORUM.



Validating date in cobol

Validating date in cobol

There may be some compilers that have added functionality that can do that. There are some Intrinsic functions that do things like convert a date to a julian. It might be possible to build a program that can be called to test dates or use DB2 to test dates if you can use that. This is really a sorely needed function. Probably the only reason COBOL doesnt have one built in, is that mission critical data is usually in a database that has that capability.

This doesnt help you much if you can't afford a big database package. If you do not like my post feel free to point out your opinion or my errors. Both shops that I have worked at, my present shop and my previous shop, have had utility programs to call for checking date validity. I believe that such utility programs are commercially available. However, as RonaldB said, you could construct your own utility program.

In order to construct your own program, first you need to figure out what date formats you will be using. This format is frequently used for elapsed time applications, as the dates can be directly subtracted from each other.

The utility program at my previous shop was written in-house. And first, the programmer would specify the format, and then the date would be passed. This program not only validated dates but would convert dates from one format to another. After you decide on the format of the date to be validated, then each program must make sure that each date to be validated is in the proper format. Then code the program call so that the date will be passed to the utility program which you have constructed.

As far as constructing a utility program, I have a few ideas. Later on, the programmer can test the month against this constructed data-type i. Hope this helps, Nina Too RE: We used rule-based design techniques, to cover every possible combination. It wasnt too hard, but takes careful thought and a logical approach. Java has date objects built in, but we were suppose to do it the hard way and document all of the rules, because it was a software design class. We also looked at the three inmates and 5 hats game.

That gets pretty interesting. Maybe I will see if I have that at home. I have written callable programs that will validate, format and convert various dates. The following URL is more than what you were requesting but might be helpful. You can view the example on-line and then download the source code for free and it contains reasonable documentation.

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Sequential File Read in COBOL



Validating date in cobol

There may be some compilers that have added functionality that can do that. There are some Intrinsic functions that do things like convert a date to a julian. It might be possible to build a program that can be called to test dates or use DB2 to test dates if you can use that. This is really a sorely needed function. Probably the only reason COBOL doesnt have one built in, is that mission critical data is usually in a database that has that capability. This doesnt help you much if you can't afford a big database package.

If you do not like my post feel free to point out your opinion or my errors. Both shops that I have worked at, my present shop and my previous shop, have had utility programs to call for checking date validity. I believe that such utility programs are commercially available. However, as RonaldB said, you could construct your own utility program.

In order to construct your own program, first you need to figure out what date formats you will be using. This format is frequently used for elapsed time applications, as the dates can be directly subtracted from each other. The utility program at my previous shop was written in-house. And first, the programmer would specify the format, and then the date would be passed.

This program not only validated dates but would convert dates from one format to another. After you decide on the format of the date to be validated, then each program must make sure that each date to be validated is in the proper format. Then code the program call so that the date will be passed to the utility program which you have constructed. As far as constructing a utility program, I have a few ideas. Later on, the programmer can test the month against this constructed data-type i.

Hope this helps, Nina Too RE: We used rule-based design techniques, to cover every possible combination. It wasnt too hard, but takes careful thought and a logical approach. Java has date objects built in, but we were suppose to do it the hard way and document all of the rules, because it was a software design class. We also looked at the three inmates and 5 hats game. That gets pretty interesting. Maybe I will see if I have that at home. I have written callable programs that will validate, format and convert various dates.

The following URL is more than what you were requesting but might be helpful. You can view the example on-line and then download the source code for free and it contains reasonable documentation.

Validating date in cobol

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2 Comments

  1. After you decide on the format of the date to be validated, then each program must make sure that each date to be validated is in the proper format. We used rule-based design techniques, to cover every possible combination. Later on, the programmer can test the month against this constructed data-type i.

  2. SimoTime Technologies shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software, documentation or training material. Downloads and Links This section includes links to documents with additional information that are beyond the scope and purpose of this document. In order to construct your own program, first you need to figure out what date formats you will be using.

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