Do the tables in figure 1 exhibit entity referential integrity? Why or why not? **Figure 1**This diagram represents a database structure with four tables: EMPLOYEE, BENEFIT, JOB, and PLAN.**Table: EMPLOYEE**- **Columns:** - EMP_CODE: Employee Code - EMP_LNAME: Employee Last Name - JOB_CODE: Job Code- **Rows:** 1. EMP_CODE: 14, EMP_LNAME: Rudell, JOB_CODE: 2 2. EMP_CODE: 15, EMP_LNAME: McDade, JOB_CODE: 1 3. EMP_CODE: 16, EMP_LNAME: Ruellardo, JOB_CODE: 1 4. EMP_CODE: 17, EMP_LNAME: Smith, JOB_CODE: 3 5. EMP_CODE: 20, EMP_LNAME: Smith, JOB_CODE: 2**Table: BENEFIT**- **Columns:** - EMP_CODE: Employee Code - PLAN_CODE: Plan Code- **Rows:** 1. EMP_CODE: 15, PLAN_CODE: 2 2. EMP_CODE: 15, PLAN_CODE: 3 3. EMP_CODE: 16, PLAN_CODE: 1 4. EMP_CODE: 17, PLAN_CODE: 3 5. EMP_CODE: 17, PLAN_CODE: 4 6. EMP_CODE: 20, PLAN_CODE: 3**Table: JOB**- **Columns:** - JOB_CODE: Job Code - JOB_DESCRIPTION: Job Description- **Rows:** 1. JOB_CODE: 1, JOB_DESCRIPTION: Clerical 2. JOB_CODE: 2, JOB_DESCRIPTION: Technical 3. JOB_CODE: 3, JOB_DESCRIPTION: Managerial**Table: PLAN**- **Columns:** - PLAN_CODE: Plan Code - PLAN_DESCRIPTION: Plan Description- **Rows:** 1. PLAN_CODE: 1, PLAN_DESCRIPTION: Term life 2. PLAN_CODE: 2, PLAN_DESCRIPTION: Stock purchase 3. PLAN_CODE: 3, PLAN_DESCRIPTION: Long-term disability 4. PLAN_CODE: 4, PLAN_DESCRIPTION: DentalThis database structure allows for the association of employees with their respective jobs and benefits.

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Do the tables in figure 1 exhibit entity referential integrity? Why or why not?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Do the tables in figure 1 exhibit entity referential integrity? Why or why not?

**Figure 1**

This diagram represents a database structure with four tables: EMPLOYEE, BENEFIT, JOB, and PLAN.

**Table: EMPLOYEE**

- **Columns:**
- EMP_CODE: Employee Code
- EMP_LNAME: Employee Last Name
- JOB_CODE: Job Code

- **Rows:**
1. EMP_CODE: 14, EMP_LNAME: Rudell, JOB_CODE: 2
2. EMP_CODE: 15, EMP_LNAME: McDade, JOB_CODE: 1
3. EMP_CODE: 16, EMP_LNAME: Ruellardo, JOB_CODE: 1
4. EMP_CODE: 17, EMP_LNAME: Smith, JOB_CODE: 3
5. EMP_CODE: 20, EMP_LNAME: Smith, JOB_CODE: 2

**Table: BENEFIT**

- **Columns:**
- EMP_CODE: Employee Code
- PLAN_CODE: Plan Code

- **Rows:**
1. EMP_CODE: 15, PLAN_CODE: 2
2. EMP_CODE: 15, PLAN_CODE: 3
3. EMP_CODE: 16, PLAN_CODE: 1
4. EMP_CODE: 17, PLAN_CODE: 3
5. EMP_CODE: 17, PLAN_CODE: 4
6. EMP_CODE: 20, PLAN_CODE: 3

**Table: JOB**

- **Columns:**
- JOB_CODE: Job Code
- JOB_DESCRIPTION: Job Description

- **Rows:**
1. JOB_CODE: 1, JOB_DESCRIPTION: Clerical
2. JOB_CODE: 2, JOB_DESCRIPTION: Technical
3. JOB_CODE: 3, JOB_DESCRIPTION: Managerial

**Table: PLAN**

- **Columns:**
- PLAN_CODE: Plan Code
- PLAN_DESCRIPTION: Plan Description

- **Rows:**
1. PLAN_CODE: 1, PLAN_DESCRIPTION: Term life
2. PLAN_CODE: 2, PLAN_DESCRIPTION: Stock purchase
3. PLAN_CODE: 3, PLAN_DESCRIPTION: Long-term disability
4. PLAN_CODE: 4, PLAN_DESCRIPTION: Dental

This database structure allows for the association of employees with their respective jobs and benefits.

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