2003”N 4ŒŽ 1“ú VERIFICATION FOR SUBSETS BACK >> –ÚŽŸ



œ Verification for subsets

1. Entity

@We have data of "business partner (trading partner)" with the identifier of "BP-NO", "business partner" is an entity, and it's described as noted below:

@@Business Partner:oBP-NO, BP-name,...p[ R ]

@
2. Subsets

@If and when there is, in the "business partner" set, a "partition" code of "classification by business relations" with the value of "1" for "consignor" and "2" for "supplier", then the entity must be divided into two subsets as noted below:

@@Business Partner:oBP-NO, BP-name, by business relations, ...p[ R ]
@@@b
@@@b
@@@~ by business relations
@@@b
@@@bQQQQ consignor
@@@b
@@@b
@@@bQQQQ supplier

@
3. Verification for subsets

@A business partner, with the value of 001 in BP-NO, may be BOTH a consignor AND a supplier.
@Subsets can be formed in the exclusive "OR" relation, so that the subset "consignor" and "supplier" NEVER be theoretically compatible, and we've got to get them to the right way.

@If we leave them as they are, an application program must be complicated with nested-IF statements so that the following cases are embedded in control-flow of statements:
@(1) both "consignor" and "supplier" are TRUE
@(2) either "consignor" or "supplier" is TRUE
@@(if "consignor" is validated first in IF statement, then "supplier" is in ELSE statement, and vice versa.)

@
4. taisyohyo (combination-table)

@The "partition" code of "business relations" must NOT be legitimate, they are NOT a "partition" code in the way they must be, so that it's NOT an attribute belonging to the "business partner" set.

@We must get it back on the right track as noted below:

@@Business Partner:oBP-NO, BP-name,...p[ R ]
@@Business Relation:oBR-CODE,...p[ R ]
@@Business Partner. Business Relation. combination-table:oBP-NO(R), BR-CODE(R)p[ taisyohyo ]

@You can see that "nested-IF" statements can be reduced into a statement, because the combination table (of "BP.BR. taisyohyo") works as a "truth table."

@

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