<p>Data Dictionary 1. Entity Relationship Diagram : Entity Relationship Diagram1</p><p>1.1. Data Dictionary Entity Name Entity Description Column Column Data Type Length Primary Nullable Unique Name Descriptio Key n</p><p>Employee An employee is CompanyID integer 10 false false false someone who work ID For the integer 10 true false false in a company unique identificatio n of employee records. name Name of varchar 255 false true false the employee. jobtitle The position varchar 50 false true false of the employee in a company.</p><p>Company A company is a ID For the integer 10 true false false unique Entity Name Entity Description Column Column Data Type Length Primary Nullable Unique Name Descriptio Key n</p><p> business unit that provides good or service.</p>