EMPLOYEE (ename, fname, lname, salary, type, total_projects, programming language)
Primary key = (enum)

project_emp (enum ,pnum)
primary key (enum, pnum)
Fkey1 = enum references employee
fkey2 = pnum references project

PROJECT(pnum, title, budget, pnum, snum, snum, spec, ecdate)
primary key (pnum, title, snum)
fkey1 = snum references stage