In these resources is comprised of everything that you need to master structured Query Language. The topics covered here has been presented with the help of an appropriate example and also offers you additional details instead of just sticking to SQL. This will make you an expert of SQL commands and the possibilities achieved using it. In addition to that, you will also get an in-depth idea about the database and its various aspects. The topics covered in this article are what is Procedure in SQL, Hierarchical Database Model, Introduction to DBMS, Advantages of DBMS which are ample to make you understand the core concept of SLQ so that you can master it.