What is database and my SQL Injections

In this i'll give you the intro to the
SQL Injections. Next post will give you
detailed information about the SQL injections.
What is the Database?
Datbase is an application that stores a
collection of Data.Database offers various APIs
for creating, accessing and managing the data
it holds. And database(DB) servers can be
integrated with our web development so that
we can pick up the things we want from the
database without much difficulties.
Database is a place that stores
username,passwords and more details.
Database should be secured. But providing
high level security is not possible for all sites
(much costlier or poor programming ). So
Database of many websites is insecure or
vulnerable(easily hackable).
Some List of Database are:
DB servers,
MySQL(Open source),
MSSQL,
MS-ACCESS,
Oracle,
Postgre SQL(open source),
SQLite,
What is SQL injection?
SQL injection is Common and famous
method of hacking at present . Using this
method an unauthorized person can access
the database of the website. Attacker can get
all details from the Database.
What an attacker can do?
ByPassing Logins
Accessing secret data
Modifying contents of website
Shutting down the My SQL
server