About Structured Query Language (SQL)

SQL

Structured Query Language (SQL) is a commonly used programming language for effective with relational databases. As its full name (Structured Query Language) shows, SQL is liable for querying and editing information stored in a convinced database management system. Though the SQL comes in lots of flavors, for example besides the standard SQL syntax, the Oracle databases also operate their proprietary PL/SQL, similarly Microsoft SQL Server operate their Transact-SQL. All of these variations, through proprietary, are stand upon the industry standard ANSI SQL.

Therefore, SQL is considered to be planned at a higher conceptual level of operation than procedural languages because the lower level logical and physical operations are not particular and are determined by the SQL engine or server process that complete it. The SQL UPDATE command is used to make modification to existing database tables and records. All the required Structured Query Language commands in a related RDBMS can typically be executed during an SQL command line interface (CLI).

Database Models :- 

A data model comprises

1. A data structure
2. A set of integrity constraints
3. Operations related with the data structure

Examples of data models include :-

1. hierarchic
2. network
3. relational

What Can SQL do?

1. SQL can retrieve data from a database
2. SQL can update records in a database
3. SQL can create new databases
4. SQL can create views in a database

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