Consider the following relational schema, referential integrity constraints, and the database state. Write SQL DDL statements to define the database and DML statements to populate the database. Make any other reasonable assumptions (e.g. for domains/data-types).

Primary Keys:

STUDENT Student_number

COURSE Course_number

PREREQUISITE - Course_number, Prerequisite_number

SECTION Section_identifier

GRADE_REPORT - Student_number, Section_identifier

The following referential integrity constraints should hold (we use the notation:

R.(A1, ..., An) --> S.(B1, ..., Bn)

to represent a foreign key from the attributes A1, ..., An of R (the referencing relation)

to S (the referenced relation)):

PREREQUISITE.(CourseNumber) --> COURSE.(CourseNumber)

PREREQUISITE.(PrerequisiteNumber) --> COURSE.(CourseNumber)

SECTION.(CourseNumber) --> COURSE.(CourseNumber)

GRADE_REPORT.(StudentNumber) --> STUDENT.(StudentNumber)

GRADE_REPORT.(SectionIdentifier) --> SECTION.(SectionIdentifier)

Specify the following queries in SQL on the above database schema.

Retrieve the names of all senior students majoring in CS (computer science).

Retrieve the names of all courses taught by Professor King in 2007 and 2008.

For each section taught by Professor King, retrieve the course number, semester, year, and number of students who took the section.

Retrieve the name and transcript of each senior student (Class = 4) majoring in CS.A transcript includes course name, course number, credit hours, semester, year, and grade for each course completed by the student.

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