FIGURE P3.10 THE CH03_BENECO DATABASETABLES Use the database shown in Figure P3.10 to work Problems 10-16. Note that the database is composed of four tables that reflect these relationships: - An EMPLOYEE has only one JOB_CODE, but a JOB_CODE can be held by many EMPLOYEEs. - An EMPLOYEE can participate in many PLANs, and any PLAN can be assigned to many EMPLOYEEs. Note also that the M:N relationship has been broken down into two 1:M relationships for which the BENEFIT table serves as the composite or bridge entity. 10. For each table in the database, identify the primary key and the foreign key(s). If a table does not have a foreign key, write None. 11. Create the ERD to show the relationship between EMPLOYEE and JOB. 12. Create the relational diagram to show the relationship between EMPLOYEE and JOB. 13. Do the tables exhibit entity integrity? Answer yes or no, and then explain your answer. 14. Do the tables exhibit referential integrity? Answer yes or no, and then explain your answer. Write NA (Not Applicable) if the table does not have a foreign key. 15. Create the ERD to show the relationships among EMPL.OYEE, BENEFIT, JOB, and PL.AN. 16. Create the relational diagram to show the relationships among EMPLOYEE, BENEFIT, JOB, and PLAN. Table name: TRUCK Primary key: TRUCK.NUM Database name: Ch03_IransCo Foreign key: BASE CODE, TYPE CODE Table name: BASE Primary key: BASE_CODE Foreien kevi none Table name: TYPE Primary key: TYPE CODE Foreign key: none Use the database shown in Figure P3.17 to answer Problems 17-23. 17. For each table, identify the primary key and the foreign key(s). If a table does not have a foreign key, write None. 18. Do the tables exhibit entity integrity? Answer yes or no, and then explain your answer. 19. Do the tables exhibit referential integrity? Answer yes or no, and then explain your answer. Write NA (Not Applicable) if the table does not have a foreign key. 20. Identify the TRUCK table's candidate key(s). 21. For each table, identify a superkey and a secondary key. 22. Create the ERD for this database. 23. Create the relational diagram for this database