Assume you want to replace the product number used for German products by the product number used in the U.S. The German products are in the table PRODUKTE(PR_NUMMER, PR_NAME, PR_PREIS). Your IN-port for the DB Lookup Dynamic component therefore contains these three attributes.
The table to look up the U.S. product number is table LOOKUP_PRODUCTS(SOURCE, DESTINATION). The SOURCE column contains the German product numbers and the DESTINATION column contains the U.S. product number.
If no value for the German PR_NUMMER can
be found in the LOOKUP_PRODUCTS, the
current PR_NUMMER is replaced by the
string “INVALID”.
A successful lookup replaces the German product number with the
corresponding U.S. number.
To set up the DB Lookup Dynamic component for this example, select:
Key Attribute – PR_NUMMER
Value Attribute – PR_NUMMER
Default Value – INVALID
Query – select DESTINATION FROM LOOKUP_PRODUCTS, where SOURCE = ‘[Lookup]’
