IT Specialists is a company to provide IT training in programming, database development and Web

applications. Business rules include:

$$ The company offers five technology courses.

$$ Each course is identified by a unique course number $($cNo$)$ and course name $($cName$).$

$$ At least one and up to three sections of each course can be offered in each training period; this

relationship is described by the training period $($period$).$

$$ Each section is identified by a unique pair of course number $($cNo$)$ and section number $($sNo$),$

and a room location $($room$).$

$$ Each section can enroll up to $100$ trainees and a section much have at least $20$ trainees to be

offered.

$$ Each trainee is identified by a unique trainee number $($tNo$)$ and name $($tName$),$ and each trainee

is restricted to enroll up to five sections of courses.

$$ The company has $30$ instructors.

$$ Each instructor is identified by a unique number $($iNo$)$ and name $($iName$),$ and each instructor

can be assigned to $0,1$ or $2$ teaching teams.

$$ Each teaching team is identified by a unique number $($mNo$)$ and a team color $($color$),$ and

consists of $2$ to $4$ instructors.

$$ Each section is taught by exactly one teaching team, and each teaching team teaches exactly one

section.