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Ambili S
Active User
Joined: 06 Sep 2007
Posts: 112
Location: India
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Hi
Can a duplicate segment be inserted in an IMS db. Suppose the root segment in R. The child segments of R are C1 and C2.
Child segments of C1 are D11 and D12. Is it possible to insert another child D13 which would be a duplicate of D12 ? |
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Sandy Zimmer
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Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE
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| Not under the same parent. It would get a status code II indicating that it is a duplicate. |
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lonewolf133
New User
Joined: 24 Nov 2007
Posts: 3
Location: Bangalore
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Hi
That would depend on how the key/field is defined. Decode the DBD,
if you find
FIELD NAME=(FLDNAME,SEQ,U)
The U would mean that the key/field is unique and you cannot insert a duplicate segment. |
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Sandy Zimmer
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Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE
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IMS databases are arranged in en.wikipedia.org/wiki/Hierarchy as opposed to relational in DB2.
May I suggest that you study the concepts? Imagine that - wikipedia teaches IMS! |
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Sandy Zimmer
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Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE
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dick scherrer
Moderator Emeritus
Joined: 23 Nov 2006
Posts: 19244
Location: Inside the Matrix
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Hi Sandy,
| Quote: |
| If I can locate this stuff, so can you. |
Yup, but you are willing to look for it. . . 
Many aren't. . .
d |
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Sandy Zimmer
Active Member
Joined: 13 Jun 2007
Posts: 826
Location: Wilmington, DE
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That's how I learned IMS all of those years ago. I was willing to WORK at it.  |
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