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CodeIgniter gives you access to a Query Builder class. This patternallows information to be retrieved, inserted, and updated in yourdatabase with minimal scripting. In some cases, only one or two linesof code are necessary to perform a database action.CodeIgniter does not require that each database table be its own classfile. It instead provides a more simplified interface.
Beyond simplicity, a major benefit to using the Query Builder featuresis that it allows you to create database independent applications, sincethe query syntax is generated by each database adapter. It also allowsfor safer queries, since the values are escaped automatically by thesystem.