Using Entity Relationship diagramming template in Microsoft Visio, develop an E-R diagram for the business described below.

South LA Inc. (SLA) is a company that provide maintenance services for commercial properties around LA area. SLA has several offices in and around LA.

• Each office has one or more employees:
  • Required attributes for an office include Office Number and Location
  • Required attributes for an employee include Employee ID and Name.
  • An employee works for only one office at a time.
  • However, SLA wants to maintain employment records of all employees working for different offices with the beginning date and the ending date for each assignment.
  • Each office has a manager responsible for all office business.
• Each property that SLA provides service is registered with one office:
  • Required attributes for a property include Property ID and Address
  • An office may have any number (including 0) of properties managed by the office.