The Big City public housing agency has assigned you the task of keeping track of who is living in the agency's developments over time. The agency needs a database that allows them to capture this information. The city has three public housing developments (each development has several units). You need to keep track of the households living within each unit, of each development, and the apartment they reside within the unit. A household is represented by a primary occupant. You need to be able to track households as they move from one apartment to another (they can move across developments and units). Therefore, you can describe the occupancy of an apartment by a household as having a start date and an end date. If they are currently living in the apartment, the end date would be left blank. . 1. Draw the entities that belong on this data model 2. Draw labeled relationships with cardinality and modality. 3. List two business rules communicated by your ERD 4. Add (a few) attributes and an identifier