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Unit 1 Assignment Analysis

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Car Insurance Entity Relationship Diagram
SC3306 Unit 1 Assignment
By XXXX XXXXX
University of the People
January 31, 2017

Introduction
The following analysis document provides an entity relationship (E-R) diagrams in support of a car-insurance company requirements as detailed in the assignment statement.
Assignment Statement
In Unit 1, we are introduced to database systems. For your written assignment: Construct an E-R diagram for a car-insurance company whose customers own one or more cars each. Each car has associated with it zero to any number of recorded accidents. Your response must be complete and in your own words with conclusion and title page.
Analysis Considerations
I have chosen to stick closely to the three entity requirements as outlined in the Assignment Statement since this course is about how to do an E-R diagram rather than a mandate to build a perfect car insurance system. Initially entities, attributes, constraints, and comments are captured in a series …show more content…

The first E-R diagram follows the standard notation in the course material. The second shows the same material (although with more detail) using the crows foot notation. When assessing use the notation closest to the solution set when evaluating this assignment.

Break down of Entities, Attributes, types, and constraints.
Customer In a more refined model customer should be linked to a Policy entity. A separate driver entity could also be created. customer_id integer Not null PK, unique, generated customer_ssn numeric(9,0) Not null CK, unique, could use a char(9) instead. customer_dr_num char(13) Not null CK, unique, validate through state departments customer _name Not shown on fig 2 customer_first_name char(25) Not null customer_mdl_intial char(1) null customer_last_name char(25) Not null customer_address Not shown on fig 2 customer_addr1 char(32) Not null customer_addr2 char(32) null customer_city char(32) Not null Validate city by

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