Read the following narrative and answer the questions below. Professors have a staff number, a name, an age, a rank, and a research speciality. Projects have a project number, a sponsor name, a starting date, an ending date, and a budget. Graduate students have a student number, a name, an age, and a degree program (e.g., M.S. or PhD). Each project is managed by one professor (known as the project's principal investigator). Each project is worked on by one or more Professors (known as the project's co-investigators). Professors can manage and/or work on multiple projects. Each project is worked on by one or more graduate students (known as the project's research assistants). When graduate students work on a project, a professor must supervise their work on the project. Graduate students can work on multiple projects, in which case they will have a (potentially different) supervisor for each one. Departments have a department number, a department name, and the main office. Departments have a professor (known as the chairman) who runs the department. Professors work in one or more departments, and for each department that they work in a time percentage is associated with their job. Graduate students have one major department in which they are working on their degree. Each graduate student has another, more senior graduate student (known as a student advisor) who advises him or her on what courses to take. Requirements: a.) Draw a fully expanded ERD. Ensure the all Identifiers and constraints are clearly shown. Ensure that Relationship Names are underlined where required. b.) Convert the diagram to a Relational Schema using the following format: . Show the entity Name followed by all of the column names. Underline the Primary key column(s). Indicate all Foreign Keys. e.g. MOVIE (MovieNo, Title, Year) ACTOR (ActorNo, Surname, Firstname) CASTING (MovieNo, ActorNo) Foreign Key 1: MovieNo references MOVIE Foreign Key 2: Actor No references ACTOR