Hello,
I have created the following join table: the two FKs are the PK of the
table. Typically, I will need to select rows for a given ITEM_FK.
Question: is it necessary/advisable to create an index for the ITEM_FK
column? Or is this redundantbecause this column is already one of the PK
columns?
CREATE TABLE SUPPLY
(
ITEM_FK integer NOT NULL,
CONTACT_FK integer NOT NULL,
COST numeric (7,2),
PRIMARY KEY (ITEM_FK,CONTACT_FK)
);
--
Regards/Gruß,
Tarlika Elisabeth Schmitz