Database Management Systems

Given the following database instance, answer questions 1.1 through 1.3 Employee Plan EC14 EC15 EC16 EC17 EC20 JC2 JC4 JC1 JC3 JC2 Term Life Stock Purchase Long-term disabil Dental Extra Vacation McDade Smith Smith Job Benefit JC1 JC2 JC4 JC3 Clerical Technical DBA Manager EC15 EC16 EC17 EC17 EC17 EC20 4 code an code Assume that the following attributes are the primary keys for the tables: emR .code is the primary key for Employee table ioh sode is the primary key for the Job table lan .sedk gmR.cede nan..Sede is a composite primary key tor the Benetit table iob cods, plan code is the composite primary key for the Extra Benefit table is the primary key for the Plan table 1.1 (2 Points) Do all tables exhibit entity integrity? Answer yes or no and then explain your