What is SQL?
SQL tutorial provides unique learning on Structured Query Language. It allows creating practice on SQL commands which give immediate results. SQL is the most important language of the database. It will teach you database creation, fetching rows, deletion and modifying rows, etc.
SQL is an ANSI (American National Standards Institute) standard but there are multiple additional versions of the SQL language.
In this tutorial, we will guide you on how to use SQL to access and manipulate data in SQL Server, MySQL, Access, Sybase, Oracle, DB2, and other database systems.
SQL Process:
When someone executes an SQL command for any RDBMS, the system specifies the best method to carry out your request, and the SQL engine figures out how to interpret the task.
There are different components contained in the process. These components are
- Query Dispatcher,
- Optimization engines,
- Classic Query Engine
- and SQL query engine etc.
Classic query engine controls all non-SQL queries as compared to SQL query engine.
Using SQL in Your WebSite
To display data from a database on web site, you will require:
- A Relational Database Management System(RDBMS) database program such as SQL Server, MS Access, MySQL
- To display data from a database using a server-side scripting language, like PHP etc.
- The third is SQL language to obtain the data.
- The most important part is knowledge of HTML / CSS
