SQL Basics-Introduction

Source: Internet
Author: User


As a test engineer of B/s software, it is necessary to master SQL.

SQL applies to the standard computer language for accessing and working with databases.

What is SQL?

SQL refers to a structured query language.

SQL gives us the ability to access a database.

SQL is an ANSI standard computer language.

What can SQL do?

SQL executes the query against the database.

SQL can retrieve data from the database.

SQL can insert new records in the database.

SQL can update the data for the database.

SQL can delete records from the database.

SQL to create a new database.

SQL can create a new table in the database.

SQL can create stored procedures in the database.

SQL can create views in the database.

SQL can set permissions on tables, stored procedures, and views.

RDBMS: relational database management system

SQL Basics-Introduction

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