The Brown Accounting and Recount Firm (BARF) has contacted you to create a personnel database to keep track of their employees. The following constraints are available:

The company has just one single location

The company is organized into departments

Each department has multiple employees

Each employee is assigned to one department at a time

Each employee has a personnel history (promotions, raises, transfers, etc.)

Each employee is assigned a phone number that does not change

Each employee is assigned to an office which could change (when transferred, promoted, etc.)

Draw an ER-Diagram of your database design for BARF and document a reasonable number of fields for your tables using DBDL (your db design must be in 3NF!).

Identify any assumptions you made that will assist in my understanding of your solution. (Must be included)