“…In the previous works, we found that many researchers work on data integrity or quality in UML diagram especially in designing system (Hadj Ali, Boufares, and Abdellatif, 2006;Alsaadi, 2006;Ha and Kang, 2008;Zhu, Shanker, and Cai, 2007;Boufares and Bennaceur, 2003). A few of them discussed the idea of extracting manually schema table from class diagram using OCL (Hadj Ali, Boufares, and Abdellatif, 2006;He, Ying, and Zhang, 2002).…”