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Mysql workbench composite primary key

19/04/2021 Client: muhammad11 Deadline: 2 Day

Prepare an entity-relationship (ER) diagram using MySQL Workbench for the business case described below. Your ER diagram should have entities and also relationships between entities. Every entity in the diagram should have primary key. Also, entities should have foreign key columns where necessary, along with other columns as described in the business requirements listed below.Homework #1 Please upload to Canvas any time before but not later than Sunday, Feb. 16 Homework is accepted only through the Homework link in Canvas Late homework is not accepted Prepare an entity-relationship (ER) diagram using MySQL Workbench for the business case described below. Your ER diagram should have entities and also relationships between entities. Every entity in the diagram should have primary key. Also, entities should have foreign key columns where necessary, along with other columns as described in the business requirements listed below. Include a text box in the diagram in which you should write your full name, and BUS 112 Section (1 or 2). Save completed diagram on your computer (from the menu, select File > Save Model As...) and name the file as your last name. Upload the your-last-name.mwb file to Canvas. Business Case & Requirements Pacific Trading is a wholesale business organization that sells a variety of products to its retail business customers (which include retailers such as Target, Wal-Mart, etc.) Pacific Trading has asked you to design a small database with the following business rules and requirements: • When a Pacific Trading customer purchases products, an invoice is prepared for the customer. A single invoice can list one or more products that the customer has purchased including product information such as price per unit and quantity sold. • A Pacific Trading customer may receive one or more invoices, though each invoice is associated with a single customer. Besides the necessary primary and foreign key columns, please be sure that the following attributes are also included in your ER diagram: Product name; customer name; customer phone number; customer credit limit; date of invoice; information about products being invoiced including product code, quantity sold (i.e., how many units of the product the customer bought), and product price per unit. The Relational Data Model Chapter 3 © 2019 Cengage. May not be copied, scanned, or duplicated, in whole or in part, except for use as permitted in a license distributed with a certain product or service or otherwise on a passwordprotected website for classroom use. A Simple Relational Model Example Conceptual and Internal (Logical) Models A Simple Relational Database Example Containing Only Two Tables Basic Terminology • Table: a structure with rows and columns that contains a unique set of one or more records. Also called: entity, relation, file • Column: Also called a filed, and attribute • Record: Also called a row, and tuple • Cell: Intersection of a row and a column; holds no more than one data item 6 Data Values Primary Key • Each row in a table must be uniquely identifiable

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