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Difference between Update-allowed and Update-only-if-null [message #320818] Fri, 16 May 2008 06:26 Go to next message
niva2004
Messages: 15
Registered: October 2006
Location: Cochin
Junior Member
I am using Developer 2000 forms 6.0.
I would like to know the difference between Update-allowed and Update-only-if-null properties of a text item which is a database item.
Re: Difference between Update-allowed and Update-only-if-null [message #320823 is a reply to message #320818] Fri, 16 May 2008 06:38 Go to previous messageGo to next message
mandeepmandy
Messages: 79
Registered: May 2008
Location: USA
Member

Update only if null Indicates that operators can modify the value of the item only when the current value of the item is NULL.Means it will update coloumn only if the value is null on that field
Re: Difference between Update-allowed and Update-only-if-null [message #320951 is a reply to message #320823] Fri, 16 May 2008 22:59 Go to previous messageGo to next message
niva2004
Messages: 15
Registered: October 2006
Location: Cochin
Junior Member
But when the update-allowed property for a text item is set to NO, the end-user cannot change the value of that field when there is a value in the database for that field.
Similarly when the update-onli-if-null property for a text item is set to YES, the end-user cannot change the value of that field when there is a value in the database for that field.

So I find it similar.But as these two properties are there there should be some difference between them.Is it not?So pls help me.

Re: Difference between Update-allowed and Update-only-if-null [message #320953 is a reply to message #320818] Fri, 16 May 2008 23:01 Go to previous message
dhanuka.rajesh
Messages: 49
Registered: March 2008
Location: Mumbai
Member

Update allowed property if set to no will never allow that field, data block to be updated at any given point of time.

Whereas if update allowed if null property is set to yes then one time data entry is allowed but after the record is posted no further changes are allowed to be made on field or data block.
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