HTML was developed by the organization or W3c Word Wide Web Consortium and it is an abbreviation of the English phrase Hypertext Markup Language . Among them is Hypertext Markup Language Hypertext and the markup language.

When we work with object-oriented system, will encounter incompatibility issues between the type of object and relational databases. The management system database relations (RDBMSs) shows data in tabular format, whereas the language object-oriented programming such as Java, C #, C ++ representation of data in graphs link Subjects. ORM is the solution to solve the problem of incompatibility hinders on.