1)
SELECT emp.nom FROM emp,equipe,projet
WHERE projet.id = 8 AND emp.id = id.emp AND id.projet = projet.id

2)
SELECT COUNT (emp.id)
FROM emp,equipe,projet
WHERE emp.id = id.emp AND id.projet = projet.id
GROUP BY projet.id

3)
SELECT skill.nom FROM skill,projet,skillPro
WHERE projet.id=8 AND projet.id = id.pro AND skill.id = idSkill

4)
SELECT skill.nom FROM skill,eval,emp
WHERE skill.id=id.skill AND emp.id=id.emp AND niveau>=4 AND emp.nom='x'

5)