Design a complete Entitity Relation Diagram (ERD) for the following scenario The following gives the specific requirements for a University. 1. There are many academic sections in the university. Each academic section is recorded with academic section Id, name and long name. 2. Each academic section offers many units; each unit is recorded with unit Id, unit code, name, credit and the academic section that offers the unit. 3. One unit can be offered in many teaching periods. Each teaching period is recorded with teaching period Id, year, teaching period of the year, start date,end date, break start date and break end date. 4. Each person is recorded with person Id, password, family name, given name,title, email and date of birth. 5. Each student is recorded with student Id, student type (i.e. international or local). 6. One staff works for an academic section. We record their staff Id, office, phone and the academic section they work for. 7. The database also records what units a student is enrolled in, and the grade and mark a student gains in each unit.