Database plays important role on both web-based and desktop-based information system. Now-a-days web-based information systems dominate information system application. Relational database systems such as Oracle, MySQL, MS SQL Server or PostgreSQL are familiarly used as data base management system. In Indonesia almost all academic information systems at higher education institutions are web-based application with RDBMS as database software. Some researches show the lack of data input validation that makes problem on data security and data quality.