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what is multiple positioning

 
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gopal

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Joined: 16 Nov 2004
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Location: bangalore

PostPosted: Thu Nov 18, 2004 9:55 pm    Post subject: what is multiple positioning
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hi, can any one plz explain me what multiple positioning with one example.


thanx
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NILESHK2302

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Joined: 13 Feb 2004
Posts: 14
Location: hyd

PostPosted: Fri Mar 04, 2005 6:19 am    Post subject: multi positioning in IMS
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Hi Gopal,

Multi positioning in IMS is nothing but accessing the same database with different views. For example you want to access the few child segments in one call and few other segments in another call wherein you dont want to disturb the PCB pointer where exactly it has set for both the calls. You can visualize this as a join condition when u use in DB2. The position is maintained relative to the PCB mask that you use in your program.
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Vijay Bhadauria

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Joined: 28 Mar 2005
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PostPosted: Mon Mar 28, 2005 4:20 pm    Post subject:
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E.g.

Suppose A is the Root Segment, B is child of A, and C & D are child of B.
C1,c2,c3,c4 are occurrences of C and D1,d2,d3,d4 are occurrences of D.

A-----> B ------>C1,c2,c3,c4
------->D1,d2,d3,d4

If you set a parentage on B by giving GU or GN call and then issuing following GNP calls:

Calls Single positioning Multiple Positioning
-------------------------------------------------------------------------------------
GNP C c1 c1
GNP D d1 d1
GNP C ?GE? (Not found) c2
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