Problem
Design and refine a database to record and manage information relating to a company's premises, as well as human resources and ongoing projects. The company is structured in departments (eg human resources, finance, production, etc.) and has several buildings. Each department is housed in a co-working room shared by department employees, in one of the buildings. However, some premises are not yet occupied, as the company has just started its activities. Each department has a number of employees and carries out different projects.