Find all manager names and all the employees each manager supervises **Employee Table Overview**This table provides information about employees, including details such as their employee number, name, job title, manager's employee number, hire date, salary, commission, and department number. Below is the transcription and explanation of each column:- **EMPNO**: Employee number, a unique identifier for each employee. - 7934 for KING - 7566 for JONES- **ENAME**: Employee name. - KING - JONES- **JOB**: Employee's job title. - PRESIDENT for KING - MANAGER for JONES- **MGR**: Manager's employee number, which is the employee number of the manager supervising this employee. - (null) for KING, indicating no manager. - 7839 for JONES, indicating JONES reports to employee 7839 (KING).- **HIREDATE**: Date the employee was hired. - 17-NOV-81 for KING - 02-APR-81 for JONES- **SAL**: Salary of the employee. - 5000 for KING - 2975 for JONES- **COMM**: Commission for the employee, if applicable. - (null) for both KING and JONES, indicating no commission.- **DEPTNO**: Department number, the number of the department to which the employee belongs. - 10 for KING - 20 for JONESThis table provides a basic data structure for tracking employee details within an organization, useful for human resources and organizational management tasks.

The given sample table has EMPNO as the primary key and MGR a foreign key which is refereing to same…

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Find all manager names and all the employees each manager supervises

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

Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

Find all manager names and all the employees each manager supervises

**Employee Table Overview**

This table provides information about employees, including details such as their employee number, name, job title, manager's employee number, hire date, salary, commission, and department number. Below is the transcription and explanation of each column:

- **EMPNO**: Employee number, a unique identifier for each employee.
- 7934 for KING
- 7566 for JONES

- **ENAME**: Employee name.
- KING
- JONES

- **JOB**: Employee's job title.
- PRESIDENT for KING
- MANAGER for JONES

- **MGR**: Manager's employee number, which is the employee number of the manager supervising this employee.
- (null) for KING, indicating no manager.
- 7839 for JONES, indicating JONES reports to employee 7839 (KING).

- **HIREDATE**: Date the employee was hired.
- 17-NOV-81 for KING
- 02-APR-81 for JONES

- **SAL**: Salary of the employee.
- 5000 for KING
- 2975 for JONES

- **COMM**: Commission for the employee, if applicable.
- (null) for both KING and JONES, indicating no commission.

- **DEPTNO**: Department number, the number of the department to which the employee belongs.
- 10 for KING
- 20 for JONES

This table provides a basic data structure for tracking employee details within an organization, useful for human resources and organizational management tasks.

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