Find the numbers that has not been used as DEPTNO in the DEPT table. ### Employee Data TableThe table displayed is a sample dataset representing employee information in an organization. Below is a detailed explanation of each column and the data it contains:1. **EMPNO (Employee Number)**: A unique identifier for each employee. - 7839 - 75662. **ENAME (Employee Name)**: The name of the employee. - KING - JONES3. **JOB (Job Title)**: The position or title of the employee within the organization. - PRESIDENT - MANAGER4. **MGR (Manager ID)**: The employee number of the employee's manager. If `(null)`, it indicates the person does not report to a higher manager. - KING: (null) - JONES: 78395. **HIREDATE (Hire Date)**: The date the employee was hired. - KING: 17-NOV-81 - JONES: 02-APR-816. **SAL (Salary)**: The salary of the employee. - KING: 5000 - JONES: 29757. **COMM (Commission)**: The commission earned by the employee. This field may be `(null)` if the employee does not earn a commission. - Both entries are (null)8. **DEPTNO (Department Number)**: The department to which the employee belongs. - KING: 10 - JONES: 20This table serves as an educational resource for understanding how employee details can be structured and retrieved in database systems. Each row represents a unique employee, and each column provides specific information about the employee's status and role within the organization. The image appears to be a table displaying information about different departments within a company. Here is a transcription of the table:| DEPTNO | DNAME | LOC ||--------|------------|----------|| 10 | ACCOUNTING | NEW YORK || 20 | RESEARCH | DALLAS || 30 | SALES | CHICAGO || 40 | OPERATIONS | BOSTON |### Explanation:1. **DEPTNO**: This column represents the unique department number assigned to each department. - 10 for Accounting - 20 for Research - 30 for Sales - 40 for Operations2. **DNAME**: This column lists the name of each department. - ACCOUNTING - RESEARCH - SALES - OPERATIONS3. **LOC**: This column denotes the location of each department within the company. - NEW YORK for Accounting - DALLAS for Research - CHICAGO for Sales - BOSTON for OperationsThis table is useful for easily identifying the departments, their unique numbers, and locations within an organization.

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Find the numbers that has not been used as DEPTNO in the DEPT table.

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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Concept explainers

Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.

Question

Find the numbers that has not been used as DEPTNO in the DEPT table.

### Employee Data Table

The table displayed is a sample dataset representing employee information in an organization. Below is a detailed explanation of each column and the data it contains:

1. **EMPNO (Employee Number)**: A unique identifier for each employee.
- 7839
- 7566

2. **ENAME (Employee Name)**: The name of the employee.
- KING
- JONES

3. **JOB (Job Title)**: The position or title of the employee within the organization.
- PRESIDENT
- MANAGER

4. **MGR (Manager ID)**: The employee number of the employee's manager. If `(null)`, it indicates the person does not report to a higher manager.
- KING: (null)
- JONES: 7839

5. **HIREDATE (Hire Date)**: The date the employee was hired.
- KING: 17-NOV-81
- JONES: 02-APR-81

6. **SAL (Salary)**: The salary of the employee.
- KING: 5000
- JONES: 2975

7. **COMM (Commission)**: The commission earned by the employee. This field may be `(null)` if the employee does not earn a commission.
- Both entries are (null)

8. **DEPTNO (Department Number)**: The department to which the employee belongs.
- KING: 10
- JONES: 20

This table serves as an educational resource for understanding how employee details can be structured and retrieved in database systems. Each row represents a unique employee, and each column provides specific information about the employee's status and role within the organization.

The image appears to be a table displaying information about different departments within a company. Here is a transcription of the table:

| DEPTNO | DNAME | LOC |
|--------|------------|----------|
| 10 | ACCOUNTING | NEW YORK |
| 20 | RESEARCH | DALLAS |
| 30 | SALES | CHICAGO |
| 40 | OPERATIONS | BOSTON |

### Explanation:

1. **DEPTNO**: This column represents the unique department number assigned to each department.
- 10 for Accounting
- 20 for Research
- 30 for Sales
- 40 for Operations

2. **DNAME**: This column lists the name of each department.
- ACCOUNTING
- RESEARCH
- SALES
- OPERATIONS

3. **LOC**: This column denotes the location of each department within the company.
- NEW YORK for Accounting
- DALLAS for Research
- CHICAGO for Sales
- BOSTON for Operations

This table is useful for easily identifying the departments, their unique numbers, and locations within an organization.

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