Explain equivalent relational schema, Database Management System

Assignment Help:

Question:

(a) Use the following business rules to produce the E-R diagram. You should clearly show all the minimum and maximum cardinality constraint on each side of the relationship.

King Car Enterprise runs a high quality car sales operation for which they provide a complete customer after sales service. In order to provide this service they keep records of the service needs of each type of car that they sell. This information includes how often a service is required in terms of the number of months between services and the distance covered. A car is serviced either when a predefined period has elapsed or the vehicle has covered a specific distance, whichever is the sooner.

A record is kept of the names and addresses of car owners. For each car that a customer owns a record is kept of the registration number of the car, the type of car, the date it was sold to the customer, the recorded distance traveled by the vehicle and the average distance undertaken by the owner per month.

When a customer makes a booking for a service a record is kept of the registration number of the vehicle and the date for which the service has been booked. Finally, a record is kept of the service history of a car which includes the dates upon which the vehicle was serviced, the registration number of the vehicle and the vehicle mileage when the service was carried out.

The primary goal of the computer system is to be able to send reminders to customers that a vehicle they own is due for service.

(b) Map the ERD produced above into its equivalent Relational Schema.


Related Discussions:- Explain equivalent relational schema

Data analyzing and desing, Critically explained the benefits and limit...

Critically explained the benefits and limitations of different database technologies with proper examples

Mapping, external and internal mapping with examples

external and internal mapping with examples

Construct substantial data model, PART MARKING:  We will only mark TWO of t...

PART MARKING:  We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with

A weak entity set and its identifying relationship, Q.  Define a weak entit...

Q.  Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set.    Entity is a t

Case-based online phone repair, please i request for your assistance in de...

please i request for your assistance in developing a case-based online phone repair

Explain how the binary tree, QUESTION (a) Give two advantages of using ...

QUESTION (a) Give two advantages of using Linked List as compared to arrays. (b) (i) You are working as programmer at the Orange Mauritius branch. You have been asked to cre

Database, Three way to handle missing field val

Three way to handle missing field val

What are temporary tables, What are temporary tables? Temporary tables...

What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.

Database for online assignment system, i want to database for online assign...

i want to database for online assignment submission system

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd