This paper surveys the constructions of 3-Calabi-Yau triangulated categories with simple-minded collections due to Ginzburg and Kontsevich-Soibelman and the constructions of 2-Calabi-Yau triangulated categories with cluster-tilting objects due to Buan-Marsh-Reiten-Reineke-Todorov and Amiot, and includes a discussion on the normal form of 2-Calabi-Yau triangulated categories with cluster-tilting objects.