a) REA diagram (classes, associations, and multiplicities) and define the relational tables (list the tables with all their attributes, underline the primary keys, and indicate the foreign keys with an asterisk). Complete the table definitions using only the listed attributes (remember that there should be no entities without attributes). You may abbreviate attribute names if the abbreviation is clear. List the tables in the following order: Resources, Events, Agents, Types, and Linking tables