DirtBike Order Database– ER Diagram Prepared by (Your Name) Summer 2013

Step 1: Define Entity Classes and Primary Keys Step 2: Define Relationships Among Entity Classes Step 3: Define Fields for each Relationship Step 4: Create Database Designing Databases with Entity Relationship Diagrams

Entity ClassPrimary Key Step 1: Define Entity Classes and Primary Keys Business Rules

E-R Diagrams Use 5 symbols 1.Rectangle – entity class 2.Dotted line – relationship 3.| - single relationship 4.0 – zero/optional relationship 5.Crow’s foot (  ) – multiple relationship

PRODUCT CUSTOMER ORDER Step 2: Define Relationships Among Entity Classes DISTRIBUTOR

Step 3: Define Fields for each Relationship Primary KeyAttribute ENTITY

Step 4: Create Database (At this point we will begin working with our DBMS system, which will be Microsoft Access)