e r modeling

Now that you have defined your E-R model and project description in the project you started and worked on inWeeks 1 and 2, start converting your logical E-R model to a physical model.

In this week, complete the following tasks:

• In a Microsoft Excel spreadsheet, define columns with the following headings:
  • Primary Key
  • Name of Column
  • Null (NorY)
  • Datatype
  • Description
  • Foreign Key
  • Foreign Key Table
• Each row will contain your rows for this table.
• Fill out the columns row-wise.
• Using Microsoft Visio or Microsoft Paint, create an E-R model of the six tables from your spreadsheet for developing the business requirements and constraints that will maintain the business logic for your database.
  • The E-R model should be readable and should map to the spreadsheet and the project description.
  • It should have all the cardinality and optionality defined.

 

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