กDemonstrate the database concepts for the following scenario: A companymanagement wants to compute the net salary of each group of employee based on thecategory of the employee such as Category A, Category B, Category C. Compute thenet salary based on the following table.Category Tax DeductedDearness Allowance(DA)A30% of gross80% of basic salarysalaryB20% of gross50% of basic salarysalaryC10% of gross30% of basic salarysalaryL

The problem is about computing the net salary of employees based on their category. The net salary…

Answered: ก Demonstrate the database concepts for…

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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A small Hotel owner wish to computerized the management of hotel operations. You are asked to assist in the development of a database for the hotel. The database keeps data about ROOM, EMPLOYEE and FACILITY. From the discussion session with the hotel manager, you have identified the following information: • Three types of ROOMS offered by the hotel are single, double and deluxe room. Each room is identiﬁed by its unique number. • In general, there are two main types of the hotel jobs, GUEST SERVICES and ADMINISTRATIVE & SUPPORT. • HOTEL MANAGER, EVENT PLANNER and ACCOUNTANT are the administrative and support job positions in the hotel. • Types of employee falls under the guest services are RECEPTIONIST, HOUSEKEEPER, or KITCHEN STAFF. • Each RECEPTIONIST is identiﬁed with her/his name, employee number and years of experience. • The receptionists need to assign a HOUSEKEEPER to each room every morning or whenever it required before the room can be assigned to a guest to ensure the…
A taxi company would like to provide an online service for customers to book a trip and for taxi drivers to check their upcoming trips. A database needs to be created to store customer data (name, address, email, telephone number) and trip information (pick up and drop off address and pick up time and date). Furthermore, your database should contain driver information (name and license plate). Each trip must be assigned to exactly one driver (and trips for a driver must not overlap). Customers who are not registered yet need to register (providing their address, phone number, email address, and credit card information). A registered customer should be able to book a trip, i.e. provide the pick-up address and time as well as the drop-off address via a graphical user interface. Customers should also be able to view their trips and cancel them if needed. All these operations are only possible after a customer signs in (which means they must be registered). Each new trip must be confirmed…
Build a relational model for the following ER schema

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