Can u help me to a)Mapping ERD to Relational Schema : This all data : Employee (empNo, ename, hiredate, DOB, phoneNo, gender, salary, commission, position, grade) Transaction (transactiondate, empNo, username, position) Login (ID, password) Grade (grade, salaryRange) Position (position, allowance) Allowance (allowance, allowanceDescription) Vehicle (empNo, make, model, nextMaintenance) Project (projectNo, projectName) Department (deptNo, deptName, deptDescription, totalEmpNo) Employee_Project (empNo, projectNo) Explanation: To map the ERD (Entity Relationship Diagram) to a relational schema, we need to identify the entities, relationships, and attributes in the diagram and convert them to tables, columns, and relationships in a relational database. Please need to maping as schedules By this program in the link https://youtu.be/CZTkgMoqVss U have all data only need to draw ?? Here is the relational schema for the entities provided: Employee (empno PK, ename, hiredate, DOB, PhoneNo, gender, salary, commission, grade) Transaction (transno PK, transactionDate, empno FK, username, position) Login (ID PK, password) Grade (grade PK, salary_range) Position (position PK, pname) Allowance (allowance PK, aname, description) Vehicle (vehicleno PK, next_maintenance, model, make, empno FK) Project (projectNo PK, projectName) Department (deptNo PK, deptName, description, totalEmpNo) Step 2/3 b) Adding Foreign keys : Employee (empNo, ename, hiredate, DOB, phoneNo, gender, salary, commission, position, grade) position references Position(position) grade references Grade(grade) Transaction (transactionDate, empNo, username, position) empNo references Employee(empNo) Login (ID, password) Grade (grade, salaryRange) Position (position, allowance) allowance references Allowance(allowance) Allowance (allowance, allowanceDescription) Vehicle (empNo, make, model, nextMaintenance) empNo references Employee(empNo) Project (projectNo, projectName) Department (deptNo, deptName, deptDescription, totalEmpNo) deptNo references Department(deptNo) Employee_Project (empNo, projectNo) empNo references Employee(empNo) projectNo references Project(projectNo) Explanation: Adding Foreign Keys: In the above relational schema, we have identified the primary keys for each table. Now, we need to add foreign keys to the tables to establish relationships between them. Here are the foreign keys for each table: Employee (grade FK references Grade(grade)) Transaction (empno FK references Employee(empno), position FK references Position(position)) Vehicle (empno FK references Employee(empno)) Department (projectNo FK references Project(projectNo)) like a picture I attached please do it like the picture

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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Can u help me to a)Mapping ERD to Relational Schema : This all data : Employee (empNo, ename, hiredate, DOB, phoneNo, gender, salary, commission, position, grade) Transaction (transactiondate, empNo, username, position) Login (ID, password) Grade (grade, salaryRange) Position (position, allowance) Allowance (allowance, allowanceDescription) Vehicle (empNo, make, model, nextMaintenance) Project (projectNo, projectName) Department (deptNo, deptName, deptDescription, totalEmpNo) Employee_Project (empNo, projectNo) Explanation: To map the ERD (Entity Relationship Diagram) to a relational schema, we need to identify the entities, relationships, and attributes in the diagram and convert them to tables, columns, and relationships in a relational database. Please need to maping as schedules By this program in the link https://youtu.be/CZTkgMoqVss U have all data only need to draw ?? Here is the relational schema for the entities provided: Employee (empno PK, ename, hiredate, DOB, PhoneNo, gender, salary, commission, grade) Transaction (transno PK, transactionDate, empno FK, username, position) Login (ID PK, password) Grade (grade PK, salary_range) Position (position PK, pname) Allowance (allowance PK, aname, description) Vehicle (vehicleno PK, next_maintenance, model, make, empno FK) Project (projectNo PK, projectName) Department (deptNo PK, deptName, description, totalEmpNo) Step 2/3 b) Adding Foreign keys : Employee (empNo, ename, hiredate, DOB, phoneNo, gender, salary, commission, position, grade) position references Position(position) grade references Grade(grade) Transaction (transactionDate, empNo, username, position) empNo references Employee(empNo) Login (ID, password) Grade (grade, salaryRange) Position (position, allowance) allowance references Allowance(allowance) Allowance (allowance, allowanceDescription) Vehicle (empNo, make, model, nextMaintenance) empNo references Employee(empNo) Project (projectNo, projectName) Department (deptNo, deptName, deptDescription, totalEmpNo) deptNo references Department(deptNo) Employee_Project (empNo, projectNo) empNo references Employee(empNo) projectNo references Project(projectNo) Explanation: Adding Foreign Keys: In the above relational schema, we have identified the primary keys for each table. Now, we need to add foreign keys to the tables to establish relationships between them. Here are the foreign keys for each table: Employee (grade FK references Grade(grade)) Transaction (empno FK references Employee(empno), position FK references Position(position)) Vehicle (empno FK references Employee(empno)) Department (projectNo FK references Project(projectNo)) like a picture I attached please do it like the picture
Entities:
- Employee: ename, hiredate, DOB, PhoneNo, gender, salary, commission
- Transaction: transactionDate, empno, username, position
- Login: ID, password
Grade: salary_range
- Position: pname
- Allowance: aname, description
- Vehicle: next_maintainance, model, make
- Project: project No, projectName
- Department: description, totalEmpNo, deptName
projectNo
PROJECT
VEHICLE
next maintenance)
make
ALLOWANCE
aname
projectName
model
allocated
description
assigned
provided
description
ename
gender
has
POSITION
pname
totalEmpNo
DEPARTMENT
employs
EMPLOYEE
recieves
(
commission
deptName
hiredate
DOB
phoneNo
salary
DO
BONUS
job
enters
has
username
job
bname
empno
TRANSACTION
manipulate
LOGIN
GRADE
date_time
password
ID
salary_range.
Transcribed Image Text:Entities: - Employee: ename, hiredate, DOB, PhoneNo, gender, salary, commission - Transaction: transactionDate, empno, username, position - Login: ID, password Grade: salary_range - Position: pname - Allowance: aname, description - Vehicle: next_maintainance, model, make - Project: project No, projectName - Department: description, totalEmpNo, deptName projectNo PROJECT VEHICLE next maintenance) make ALLOWANCE aname projectName model allocated description assigned provided description ename gender has POSITION pname totalEmpNo DEPARTMENT employs EMPLOYEE recieves ( commission deptName hiredate DOB phoneNo salary DO BONUS job enters has username job bname empno TRANSACTION manipulate LOGIN GRADE date_time password ID salary_range.
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