Problem $2.(30$ points$)$ Consider the following specification of requirements, for a database that will be recording the use of parking spaces by staff members for a calendar year:

a$)$ A large organization has several parking lots, which are used by staff. Each member of the staff has a unique ID number, name, telephone extension number, and vehicle license number.$$

b$)$ Each parking lot has a unique name, location, capacity, and number of floors.

c$)$ Each parking lot has parking spaces, which are identified using a space number that is unique in each parking lot only, i$.$e$.$ the same space number can be used in multiple parking lots. Each parking space is either covered or uncovered.

d$)$ Members of staff can be assigned the sole use of a single parking space; each parking space will not be shared throughout the year, even if the staff member will only use it part of the year.$$ Not everyone will request and be assigned a parking space, and some parking spaces may remain unused. The use period $($start month to end month$)$ must be recorded for each parking space.

From the previous specification, identify and represent in a single ER diagram:

$-$ The strong and weak entity types and their attributes; identify their PKs $/$ discriminators in the diagram.

$-$ The relationship types and their attributes $($if any.$)$

$-$ The cardinality and participation constraints.

Provide any additional assumptions to support your model $($if necessary.$)$