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Keanehelp
New User
Joined: 27 May 2008
Posts: 71
Location: USA, CA.
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Hi,
We are modifying the structure of an existing IMS segment(increasing overall size by 1 byte and expanding a variable in the middle of the segment resulting in all following variables being displaced by 1 byte)
While writing the program to restructure the data, do we need to recalculate and update the length of each record using this segment ?
Also please could you let me know the various scenarios when the segment length for each record in an IMS database needs to be recalculated ?
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Sandy Zimmer
Active Member
Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE
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| If you are adding a byte to the middle of your segment in an EXISTING database, you are going to have a real mess unless you are very careful. If your database is defined as variable length, you always need to insert it with a recalculated length. Since you are going thru all the trouble of writing a conversion program, why not put all variables at the end of your segment? |
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