9) When using an REA diagram to develop a database, a many-to-many relationship must be A) broken into two, one-to-one relationships. B) combined into a single one-to-one relationship. C) combined into a one-to-many relationship. D) broken into two, one-to-many relationships. 10) The type of relationship between two entities is determined by A) maximum cardinalities only. B) minimum cardinalities only. C) minimum and maximum cardinalities. D) median cardinalities. 11) Which of the following is not one of the three steps to implementing an REA diagram in a relational database? A) Assign attributes to appropriate tables. B) Create a table for each distinct entity in the diagram and for each many-to-many relationship C) Link every event to at least one resource. D) Use foreign keys to implement one-to-one and one-to-many relationships. 12) Why might the same REA diagram result in different relationship cardinalities? A) Different organizations might have different business policies. B) Different designers might implement an REA diagram differently. C) Different consultants might draw an REA diagram differently. D) Errors occur in the REA diagram. 13) The primary key for M:N relationship tables A) is a single attribute. B) always consists of two attributes. C) is the primary key of the most important entity linked to that relationship. D) does not exist. Many-to-many relationship tables only use foreign keys