Draw an entity relationship diagram

Assignment Help Database Management System
Reference no: EM132280087


• To develop a conceptual data model diagram
• To perform logical design (optional)

Assignment Specification

In this assignment, youneed to perform the followingtasks for the given case study:
• Draw an Entity Relationship (ER) diagram
• Perform logical design(optional)
• Create3NF Relations(optional)

Please note that the above mentioned optional components,logical design and 3NF relations, will not be marked, however those tasks are expected to enrich your skills in the creation of database in future.

Case Study
CQParcels (CQPS) is well known for its parcel handling business in Australia. It collectsthe parcels from its customers and then transports and delivers them to the respective specified delivery addresses in Australia.

When anew customer(sender of the parcels)requestsfor parcel deliveries, CQPS collectsmany details that are related to them. Among the many information that is required to be collected at that time, the contact phone and email details of the customerare considered to be vital.

Whenever a customer requests a parcel delivery, the parcel-delivery information such as the delivery address and receiver details are collected. Subsequently, one of CQPS employees collects the parcel from the sender, verifies whether the address for delivery is mentioned on the parcel, and then creates an invoice for the charges related to its delivery.

For each parcel-delivery, CQPS also maintains the details of the employee involved, the date and time of collection/pick up and delivery. Though most of the parcels are delivered to the specified addressees, some of them occasionally are not deliverable due to incorrect/incomplete delivery address. Such parcels are returned to the senders.

When an undelivered parcelis not returned to the sender/customer within a month of collection, then the customer can lodge a compensation claim to CQPS. The compensation claims are verified and settled by CQPS based on their records.

Assignment Requirements

In this assignment,you need to create an Entity Relationship (ER) diagram relevant to the above case study and optionallyperform logical design to produce appropriate3NF Relations.

The attributes for various entities have not been purposely described in the case study so that the students are encouraged to further research and list the pertinent attributes in addition to the required identifier for each and every entity in their ERD.

1 Draw an appropriate ER diagram
Use the symbols as prescribed in your unit-textbook to draw the ER diagram (ERD) for the above case study.

Your ERDmust
• show all necessary entities, attributes andrelationships
• show identifiers/identifying attributes as necessary
• show multi-valued attributes, ifany
• show participation andcardinality
• show associative entities, ifappropriate
• show weak entities, if any
• use the notation described in the settext
• use consistent and appropriate naming for entities and attributes as specified in the unit text book

2 Assumptions and Business rules
Provide assumptions and business rules relevant to your ERD.

3 Create Logical Design (Optional):
If you would like to perform this optional component of this assignment, you can map your Entity Relationship diagram (ERD) into relations and make sure that all the relations are in 3NF. Provide all the relationsin the following format:

Customer (CustomerId,CustomerName,Street,Suburb,State,PostCode,Email)

Invoice (InvoiceNumber,InvoiceDate, Total, CustomerId)


Verified Expert

This assignment is to create an ER diagram for the given case study of a parcel delivery company. The solution also the business rules which are assumpted as per the specification given in the case study. The logical design of the 3NF relation (although its optional) have been designed .

Reference no: EM132280087

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4/11/2019 1:48:35 AM

Word doesn't matter because task is important . Draw an Entity Relationship (ER) diagram . Perform logical design (optional) . Create 3NF Relations (optional) It is dependent on case study and then check all of three assignment requirement and concentrate on notes


4/11/2019 1:48:10 AM

Marking Criteria:   Item Maximum Marks 1 Identified entities (including super type and sub type entities), associative entities, weak entities (if any) and named appropriately 6 2 Provided appropriate attributes 6 3 Provided identifiers/identifying attributes 3 4 Drawn correct relationships between entities and named them appropriately 5 5 Used proper symbols for ? entities including super type and sub type; associative entities; weak entities if any ? relationships ? identifying attributes ? min and max cardinalities for the relationships 6 6 Provided appropriate justification for assumptions and business rules 4   Penalty due to plagiarism/copying     Late Penalty: Less 5% of available marks per calendar day     Total 30


4/11/2019 1:47:56 AM

Important points • You must work individually on this assignment. • The model solution to this assignment will be released approximately TWO (2) weeks after the due date. • Assignments that are submitted after the release of the model solution will receive zero marks. • You must state in your assignment (at the end under the heading Acknowledgements is a good place) all materials and sources you used.Before submitting your assignment, review the marking criteria that are available in the assignment specification. Ensure that all the criteria are addressed in your submission. • After submitting your assignment, please verify that your submission was successful, i.e. download your submitted files to ensure that they are correct. • Penalty related to late submission and plagiarism is handled as per the university policies.


4/11/2019 1:46:19 AM

The attributes of the possible entities have not been mentioned clearly. Hence, you need to assume at least two relevant attributes for each of the entities that you will identify for your ER diagram. The delivery charge for a parcel need not be assumed as calculated value (i.e., it can be assumed to be a stored attribute). You must make an electronic submission for this assignment using the appropriate assignment submission link in the unit web site. You should submit a Microsoft Word documentcontaining: • A copy of your ERD. • A list of business rules and assumptions including theirjustifications. • 3NF Relations – optional Yourdocumentshouldcontainappropriateidentifyinginformation(yourstudentnumber,name,unit number, etc.) and should contain appropriate headings for eachsection.

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