Entity-relationship diagram
Course:- Database Management System
Reference No.:- EM13419

Assignment Help
Assignment Help >> Database Management System

Create an entity-relationship diagram and design accompanying table layout using sound relational modeling practices and concepts. The relationships between the entities and the attributes for the entities will be described. This database will provide the foundation for the follow-on project. The subsequent paragraphs provide the background and summary of the business requirements.

You are a database consultant with Ace Software, Inc. and have been assigned to prepare a database for the Mom and Pop Johnson video store in town. Mom and Pop have been keeping their records of videos and DVDs purchased from distributors and rented to customers in stacks of invoices and piles of rental forms for years. They have finally decided to automate their record keeping with a relational database.

1. Evaluate and list your entities. Then explain fully the relationships between entities via pairs of sentences that shows the two components of the total relationship in both directions between the entities. Relationships may be unary, binary, or ternary with respect to entities. You could not have any many-to-many relationships.

2. Begin the database logical design by identifying the entities, relationships between entities, and entities' attributes. Use the same entity/relationship diagram (ERD) notation as used in class for entities, attributes, and relationships. Sketch your ERD by hand or a drawing program (e.g., Visio, PPT, SQL Modeler ...) on one single 8-1/2" x 11" page (8-1/2" x 14" maximum), labeled "Mom and Pop Johnson Video Store Database E/R Diagram." Your ERD could not have any many-to-many relationships between entities.

3. Complete the logical database design and start the physical database design by preparing metadata documentation) that describes the table(s) created from each entity and thecolumn(s) created from each attribute in the ERD. Attributes could be self-describing. Particular attention will be given to the proper specification of all primary key (via "PK") and foreign key (via "FK") columns in the table layouts. These could match your ERD exactly. Begin these descriptions on a page labeled "Proposed Database Tables and Columns based on E/R Diagram." All tables must be 3rd Normal Form. Shows any and all assumptions that were made.

Ask Question & Get Answers from Experts
Browse some more (Database Management System) Materials
You should choose a data storage problem of your interest and identify the different pieces of data that should be stored in database.
Importing and Analyzing Data for Johnson Equipment-Johnson Equipment, the medium-sized laboratory equipment manufacturing company where you work, is in the process of acquiri
Identify and describe three criteria that should be used to evaluate the selection of a database management system. Describe how an organization should use each criterion to e
Customers Dunne an Olowski are included in the CUSTOMER table also in CUSTOMER_2 table. Explain How many records are returned when using the MINUS operator?
You may need to rerun the schema, especially when you have been experimenting with your solutions and may have corrupted the database unintentionally. If you suspect that ther
Applying Data Mining techniques to publically available data produced by both Transpower and the National Institute of Water and Atmospheric Research (NIWA), from which a ra
Design a minimal relational database for Pieces Boutique. By minimal, it is meant that option to post a key into existing table because of either needed participation or a d
Review the data analysis and consider the coding activities you have engaged. Consider the kinds of data that would be generated through the data collection techniques antic