Question 67 What is the purpose of a foreign key? O To identify a record in a table O To enhance data independence O To implement a relationship between two tables O To reduce data redundancy To enhance data usage Question 68 A foreign key O is the same as a composite key none of the other choices O cannot have a null value O all of the other choices is an attribute in a table which is the primary key in a related table nd estion 69 The main integration points in an enterprise resource planning system are O resource tables O agent tables O system tables O bridge tables O event tables