Question

 Database Schema: (10 Marks)
Create the necessary tables to store the following information:
 A unique Contact_ID for each contact.
 Customer Name, Address, Mobile Number, and Email Address.
 A unique Vehicle_ID for each vehicle.
 Vehicle Registration Number, Model, Manufacturer, Year of Manufacture, and Fuel Type.
 Each customer may own multiple vehicles.
 A unique Mechanic_ID for each mechanic.
 Mechanic Name, Specialization, Experience, and Contact Number.
 A unique Service_ID for each service transaction.
 Service Date, Service Type (Periodic Service, General Repair, Engine Repair, Electrical Repair, Washing, etc.), Labour Charges, Spare Parts Cost, and Total Bill Amount.
 Each service transaction must be assigned to one mechanic.
 Multiple spare parts may be used during a service. Store the Part_ID, Part Name, Quantity, and Unit Price for each spare part. Your design should include:
 An ER Diagram for the Vehicle Service Management System.
 The final set of tables with all columns clearly defined.
 Underline the Primary Key and specify all Foreign Keys.
 Ensure that the database schema satisfies Third Normal Form (3NF).

08 Aug 2026
Answer :
Word Count : 1240
The Vehicle Service Management System can be designed as a relational database in which customers, vehicles, mechanics, services, and spare parts are stored in separate but related tables. The main objective of the design is to avoid data redundancy, maintain data integrity, and represent the relationships between customers, their vehicles, mechanics, service transactions, and spare parts. The database can be implemented using SQL and can later be connected with a C++ program in the DBMS and C++ Lab for inserting, updating, searching, and displaying records. The main entities in the system are Customer, Vehicle, Mechanic, Service, Spare Part, and Service Part. A Customer can own many Vehicles, but every Vehicle belongs to one Customer. A Vehicle can have many Service transactions, while each Service transaction is related to exactly one Vehicle. A Mechanic can handle many Service transactions, but each Service transaction must be assigned to one Mechanic. A Service can use multiple Spare Parts, and the same Spare Part can be used in multiple service transactions. Therefore, a many-to-many relationship exists between Service and Spare Part, which is resolved using an intermediate table called Service_Part. The ER diagram can be represented as follows: ```text ┌──────────────────────┐ │ CUSTOMER │ ├──────────────────────┤ │ Contact_ID PK │ │ Customer_Name ________ ______ __________ ________ _____ __________ ________.
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