Suppose that we have the following requirements for a university database that
is used to keep track of students' transcripts:
a. The university keeps track of each student's name (SNAME), student number
(SNUM), social security number (SSN), current address (SCADDR) and phone
\((\mathrm{SCPHONE}),\) permanent address \((\mathrm{SPADDR})\) and phone
\((\mathrm{SPPHONE}),\) birth date \((\mathrm{BDATE})\)
\(\operatorname{sex}(\operatorname{sex}), \text { class (cLass) (freshman,
sophomore, } \ldots, \text { graduate }),\) major depart ment (MAJORCODE),
minor department (MINORCODE) (if any), and degree program \(\left(p_{R O
C}\right)(B, A,, B, S, \ldots, P H, D,) .\) Both sss \(N\) and student number
have unique val. ues for each student.
b. Each department is described by a name (DNAME), department code (DCOOE),
office number (DOFFICE), office phone (DPHONE), and college (DCOLLECE). Both
name and code have unique values for each department.
c. Each course has a course name (cNAME), description (cDESC), course number
(CNUM), number of semester hours (cREDIT), level (LEVEL), and offering depart.
ment (coept). The course number is unique for each course.
d. Each section has an instructor (INAME), semester (SEMESTER), year (YEAR),
course (seccourse), and section number (secwum). The section number
distinguishes different sections of the same course that are taught during the
same semester/ year; its values are \(1,2,3, \ldots,\) up to the total number of
sections taught during each semester.
e. \(A\) grade record refers to a student \((\operatorname{ss} N),\) a particular
section, and a grade \((\mathrm{CRADE})\) Design a relational database schema
for this database application. First show all the functional dependencies that
should hold among the attributes. Then design relation schemas for the
database that are each in \(3 \mathrm{NF}\) or BCNF. Specify the key attributes
of each relation. Note any unspecified requirements, and make appropriate
assumptions to render the specification complete.
