ER_diagrammingConventions_assignment (1).docx - www.oracle.com/academy Database Design 3-2 ER Diagramming Conventions Practice Activities Objectives •

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Database Design 3-2: ER Diagramming Conventions Practice Activities Objectives Construct ER diagram components that represent entities and attributes according to diagramming conventions Vocabulary Identify the vocabulary word for each definition below. Softbox A four-sided visual element with rounded corners, used to represent an entity in an ERD. Try It / Solve It 1. Read the given business scenario. Draw the entities HAIRSTYLIST and CLIENT. List the attributes associated with each entity and specify whether they are mandatory or optional. Identify the UIDs. Write out the relationship in English, including optionality and cardinality. Follow the diagramming conventions discussed. “In our salon, we have a number of hairstylists. They are all salaried employees, so we keep a record of their first name, last name, address, phone number, social-security number, and salary. During the course of a day, a hairstylist may see several clients. On a slow day, a hairstylist may not work on anyone at all. We have several walk-in clients, and they each get assigned to one hairstylist. We just ask for their first name.
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  • Fall '15
  • KathyHlaner

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