Draw entity-relationship diagram of database, Database Management System

Assignment Help:

Read the description below and draw an Entity-Relationship diagram for it. You must use the symbols described in the course materials.

This database will help the Parents Assocciation of the local school to manage their upcoming Summertime Fete. The main aim of the database is to manage aspects of the operation of the stalls.

1 PA members are represented in the database. Their name is used to identify them and their email address is also recorded.

2 All stall are given a unique title ("Bring and Buy", "Cakes", etc). The stall also has a location and the number of people required to operate it.

3 Stalls are sponsored by companies and local businesses. Each sponsor has a company name, contact number, contact person and their advertising slogan is included in the database (to be announced over the Public Address system on the day of the fete)

4 Companies usually sponsor many different stalls. The amount donated to each stall is recorded. Most stalls need sponsorsip from more than one company. Every company in the database must sponsor at least one stall.

5 Work times are 1 hour in duration. Each slot is known by its commencement time (eg "the 11AM slot"). No other information is recorded about time slots.

6 Members work on stalls in selected time slots. There are not restrictions on members working on stalls, etc except for one condition; for a given time slot, a member can only work on one stall.

7 At the fete, there are range of administrative jobs that need attending to. They are identified by the task. There is also a record of the equipment required for the task.

8 Some members will be assigned a job but no more than one job. Some jobs are complex and will need many people to complete them.


Related Discussions:- Draw entity-relationship diagram of database

ER diagram, construct an er diagram for a hospital with a set of patients a...

construct an er diagram for a hospital with a set of patients and a set of medical doctors. associate with each patient a log of various test and examination conducted.convert er d

Give the relational calculus queries of players in sql, An orchestra databa...

An orchestra database consists of the following relations: CONDUCTS (conductor, composition) REQUIRES (composition, Instrument) PLAYS (Player, Instrument) Give the relational

What is a recursive relationship, What is a recursive relationship? Give an...

What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER

How does query tree represent relational algebra expression, How does a que...

How does a query tree represent a relational algebra expression?  Discuss any three rules for query optimisation, giving example as to when should each rule be applied.     Ans

Higher normal forms, Higher Normal Forms Is there more normal forms beyond...

Higher Normal Forms Is there more normal forms beyond BCNF? Yes, though, these normal forms are not based on the concept of functional dependence. More normalisation is needed if

Prepare entity relationship diagram for models your design, This project re...

This project requires you to perform a systems analysis and then design a system solution using database software. Ace Auto Dealers specializes in selling new vehicles from Subaru.

Define average seek time, Define average seek time. The average seek ti...

Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.

Lack of standards and experience, Lack of standards and experience: The la...

Lack of standards and experience: The lack of standards has considerably limited the potential of distributed DBMSs. As well, there are no tools or methodologies to help users cha

What is object oriented model, What is Object Oriented model? This mod...

What is Object Oriented model? This model is based on collection of objects. An object has values stored in instance variables with in the object. An object also having bodies

Reasons for the growing popularity of data mining, Question: Data Minin...

Question: Data Mining is the process of extracting knowledge hidden from large volumes of raw data. (a) Using a suitable example, illustrate how Data Mining can be useful t

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