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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. 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. Create the ERD to show the relationship between EMPLOYEE and JOB

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. 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. Create the ERD to show the relationship between EMPLOYEE and JOB

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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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. 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. Create the ERD to show the relationship between EMPLOYEE and JOB

FIGURE P3.10 THE CH03_BENECO DATABASE TABLES Database name: Ch03_BeneCo Table name: EMPLOYEE Table name: BENEFIT EMP CODE PLAN_CODE EMP CODE EMP_LNAME JOB_CODE 14 Rudell 15 McDade 16 Ruellardo 17 Smith 20 Smith 2 15 2 15 3 1 16 17 17 17 4 20 3 Table name: JOB Table name: PLAN JOB_CODE JOB_DESCRIPTION 1 Clerical 2 Technical 3 Managerial PLAN_CODE PLAN_DESCRIPTION 1 Term life 2 Stock purchase 3 Long-term disability 4 Dental 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 ΕMPLOYΕE . • 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 EMPLOYEE, BENEFIT, JOB, and PLAN. 16. Create the relational diagram to show the relationships among EMPLOYEE, BENEFIT, JOB, and PLAN.
Transcribed Image Text:FIGURE P3.10 THE CH03_BENECO DATABASE TABLES Database name: Ch03_BeneCo Table name: EMPLOYEE Table name: BENEFIT EMP CODE PLAN_CODE EMP CODE EMP_LNAME JOB_CODE 14 Rudell 15 McDade 16 Ruellardo 17 Smith 20 Smith 2 15 2 15 3 1 16 17 17 17 4 20 3 Table name: JOB Table name: PLAN JOB_CODE JOB_DESCRIPTION 1 Clerical 2 Technical 3 Managerial PLAN_CODE PLAN_DESCRIPTION 1 Term life 2 Stock purchase 3 Long-term disability 4 Dental 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 ΕMPLOYΕE . • 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 EMPLOYEE, BENEFIT, JOB, and PLAN. 16. Create the relational diagram to show the relationships among EMPLOYEE, BENEFIT, JOB, and PLAN.
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