SQL Injection Attacks - Are You Safe?

The database is the heart of most Web applications: it stores the data needed for the Websites and applications to "survive". It stores user credentials and sensitive financial information. It stores preferences, invoices, payments, inventory data, etc. It is through the combination of a database and Web scripting language that we as developers can produce sites that keep clients happy, pay the bills, and -- most importantly -- run our businesses.

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http://www.sitepoint.com/article/sql-injection-attacks-safe

Regards
Sakthi