Draw ERD and transform the ERD into relational schema and write DDL according to the relation schema for the following questions

Q$.1$: A person is described by id$,$ name $($first name, middle name, last name$),$ multiple qualifications $($degree$,$ grade$),$ multiple trainings $($title$,$ country, duration$),$ present address $($street no$,$ street name, city$)$ and permanent address $($street no$,$ street name, city$)$ date of birth and age.

Q$.2$: There are many teachers in the university. Teacher has Id$,$ name, salary. Among the teachers, Head of the department is appointed for a certain period of time $($start date and end date$).$ A teacher may be appointed Head many times. In different times, different teachers are appointed as Head.

Q$\mathrm{.}3$: A teacher can teach many courses and a course is taught by exactly one teacher. A teacher has id$,$ name and degree. A course has course$-$id$,$ title and credit.

Q$\mathrm{.}4$: There are many foot ball teams participated in world cup $2022.$ A team has id and country. A team plays with another team in a particular date and a title of the play e$.$g$.,$ round $1,$ semifinal etc.

Q$\mathrm{.}5$: A teacher can teach many courses and a course can be taught by many teachers. A course has course$\_$id$,$ title and credit$\_$hour and a teacher has T$\_$id$,$ name, designation salary. You have to record the semester and year of teaching of these courses by the teachers.

Q$\mathrm{.}6$: A mother can have many children and a child must have only one child. A mother has birth registration $($M$\_$BRN$)$ number and a child have also birth registration number $($C$\_$BRN$).$ A mother is described by date of birth, profession and income. A child is described by date of birth, height and weight.

Q$\mathrm{.}7$: An apartment must be owned by exactly one person and a person may own maximum one apartment. A person has NID, name, date of birth, street, city and income. An apartment has app$\_$id$,$ size, app$\_$name, floor$\_$number, location and price.

Q$\mathrm{.}8$: A course has course$\_$id$,$ title and credit$\_$hour. A section has sec$\_$id$,$ semester and year. A course has many sections and a section has exactly one course. The section id cannot identify the section uniquely a section because the same section id is used for different courses. The section id$,$ semester and year jointly cannot identify a section uniquely. So section has no primary key.

Q$\mathrm{.}9$: An instructor can advise many students but a student must have exactly one adviser. An instructor has id$,$ name, dept$\_$name and salary. A student has id$,$ name, street, city, CGPA and tot$\_$credit.

Q$\mathrm{.}10$: A student can enroll a maximum of $45$ courses and a minimum of $3$ courses. A course can be enrolled by minimum $15$ students and a maximum of $40$ students. A student has id$,$ name, street, city, CGPA and tot$\_$credit. A course has course$\_$id$,$ title and credit$\_$hour.

Q$\mathrm{.}11$: There are many projects developed by many students and supervised by instructors. An instructor can supervise many projects developed by many students but any project$-$student pair must be supervised by only one instructor. A project has P$\_$id$,$ location and budget. A student has id$,$ name, street, city, CGPA and tot$\_$credit. A superviser has s$\_$id$,$ name, date of birth and salary.

Q$.12$: Explain the terms logical schema and physical schema.

Q$.13$: Explain data model.