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.

This tutorial help you can show list categories with parent category and sub categories of this parent in ruby on rails.

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.