Draw entity-relationship diagram of database, Database Management System

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.

Posted Date: 3/19/2013 5:29:54 AM | Location : United States







Related Discussions:- Draw entity-relationship diagram of database, Assignment Help, Ask Question on Draw entity-relationship diagram of database, Get Answer, Expert's Help, Draw entity-relationship diagram of database Discussions

Write discussion on Draw entity-relationship diagram of database
Your posts are moderated
Related Questions
DISADVANTAGES OF RDBMS

Explain Derived and Non-Derived Attribute? In few cases, two or more attribute values are related, for instance, Age and BirthDate attributes of a person. For specific person e

Can a filed occur in several field groups. Yes.  But it leads to redundant data redundancy.

Explain what is DDL? DDL - Data Definition Language: statements used to define the database structure or schema. Some examples: CREATE - to create objects in the database ALT

In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.

What are the function of DBA?

draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer

The First Normal Form (1NF) Let us first describe 1NF: Definition: A relation (table) is in 1NF if 1.      There are no duplicate tuples or rows in the relation. 2.

Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat

What is RDBMS? Relational Data Base Management Systems (RDBMS) are database management systems that maintain data records and indices in tables. Relationships may be formed and