Oracle Forms Developer – Form Builder Reference, Volume 1

Join Condition property
Description
62
Defines the relationship that links a record in the detail block with a record in the master block.
Applies to relation
Set Form Builder
Required/Optional required for a relation object
Usage Notes
You can specify a join condition with the following entries:
• an item name that exists in both the master block and the detail block (block_2.item_3)
• an equating condition of two item names, where one item exists in the master block and the other
item exists in the detail block
• a combination of item names and equating conditions
Join Condition restrictions
• Maximum length for a join condition is 255 characters.
Join Condition examples
Examples:
To link a detail block to its master block through the ORDID text item that is common to both blocks,
define the following join condition:
ORDID
To link the detail block to its master block through a number of text items, define the join condition as
follows:
block1.item1 = block2.item1 AND block1.item2 = block2.item2
Keep in mind that the join condition specifies the relationship between the items in each block, not
between the columns in the tables on which those blocks are based. Thus, the items specified must
actually exist in the form for the join condition to be valid.