Parametrized queries OR checking input – how to learn :)
I think this doesn’t need any description. 😉
Source: xkcd.com
Jiří Činčura is an independent developer, .NET, C# and Firebird expert, focusing on data and business layers, language constructs, parallelism, databases and performance. He's Microsoft Most Valuable Professional and frequent speaker. You can read his articles, guides and tips and tricks at www.tabsoverspaces.com.