I have two tables, tableA with ID as a primary key and tableB which has two fields (apart from several other fields)
that are IDs from tableA. Can I create a foreign key relationship between them? The basic relationship is one-to-many.
Yes. In fact, this is quite common:
create table tableA ( ID integer not null , AName varchar(5) not null , constraint A_pk primary key (ID) ) create table tableB ( AID1 integer not null , AID2 integer not null , Bstuff varchar(9) not null , constraint B_pk primary key (AID1,AID2) , constraint B_fkA1 foreign key (AID1) references tableA (ID) , constraint B_fkA2 foreign key (AID2) references tableA (ID) )
Dig deeper on Oracle and SQL
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.