Question 1
Concatenated keys are
◦ used when combining two or more REA diagrams.
◦ foreign keys used to implement 1:N or 1:1 relationships.
◦ multiple attribute keys used to implement 1:M relationships.
◦ used to implement M:N relationships.
Question 2
How many tables are needed to implement an REA data model that has six distinct entities, three M:N relationships and four 1:N relationships in a relational database?
◦ 6
◦ 9
◦ 11
◦ 13