Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The Driver Relationship considered that working on both DRIVERS and ACTIVE_DRIVERS tables is difficult and too much work. Therefore, the team wants you to remove the table for the active drivers.
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- Task Description: Consider the following relations for a company: Department (Did: integer, Dname: string, location: string) Employee (Eid: integer, Ename: string, Erank: integer, salary: real, DepartmentID, integer) Project (Pid: integer, DepartmentID: integer, Pname: string, budget: real, start year: integer) The “DepartmentID” fields in both Employee and Project are foreign keys referencing the “Did”field of the Department table. Through Java application, use SQL to insert (random but meaningful) data records in the above tables:1) Create two different departments (named: Marketing and Human Resources)2) Create at least three employees per department (6 employees in total). A rank of an employee is an integer value between 1 and 3.3) Create at least three different projects per department (6 projects in total). The start year is between 2018 and 2020.arrow_forwardSo I need help creating a schema for my data managment class. I need someone to inspect my code and make any necessary adjustments........arrow_forwardplease answer with proper explanation and step by step solution.arrow_forward
- Task Description: Consider the following relations for a company: Department (Did: integer, Dname: string, location: string) Employee (Eid: integer, Ename: string, Erank: integer, salary: real, DepartmentID, integer) Project (Pid: integer, DepartmentID: integer, Pname: string, budget: real, start year: integer) The “DepartmentID” fields in both Employee and Project are foreign keys referencing the “Did”field of the Department table. Use SQL to create a new database (named MyCompany), then use it to build the relations mentioned above. Place the constraints (e.g., default values) you find appropriate.arrow_forwardThe InstantRide Driver Relationship team wants to learn how many travels each driver has done in the month of October. You need to send them the DRIVER_ID, and two calculated columns: DAY and RIDES. The DAY column is calculated using the DAY() function with the TRAVEL_START_TIME as the argument. The RIDES column is calculated by using the COUNT() function to determine the number of rides given for each day. Filter the results with the MONTH function.arrow_forward
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