Why do you need Primary in MVG?

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for a multivalue field there is a field called SSA Primary Field available in the parent BC. this field stores the primary child. which avoids querying on the child BC for displaying the value in the MVG. this is for performance improvision. this creates 1:1 Link.

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Chaitanya

  • Jan 6th, 2006
 

Multi value group applet is a dialog box which displays and maintains a set of records from another BC associated with currently displayed BC record. One record in the MVG applet is made primary. The record with primary check box ticked is the one which gets displayed in the originating applet controls.

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Vijaya

  • Feb 6th, 2006
 

A Primary creates a M:1 realtionship b/w the Parent and the Child record.

Thus it increases the performance by allowing a single query using the SQL join to display both the Parent and the Child records in parent Applet.

Without primaries, each MVG needs a separate query to display a child record in the parent Applet. With Primary, using a single query,you will be able to diaply both the parent and the child records.

Regards,

Vijaya Hariharan

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