1. A voice recognition apparatus comprising: a voice input unit inputting a voice in a continuous manner as a voice input, the voice input including a command portion and a data portion; a command recognizer recognizing the command portion of the voice input and outputting a command based on a voice recognition result of the voice input with reference to a command dictionary; a data recognizer recognizing the data portion of the voice input and outputting a data recognition result based on a voice recognition result of the voice input with reference to a data dictionary, the data dictionary including a plurality of data-category dictionaries corresponding to a plurality of data categories, and the data recognizer including a plurality of data-category recognizers respectively using one of the plurality of data-category dictionaries for recognizing the data portion of the voice input and outputting the data recognition result; and a voice recognition result selection unit selecting one of a plurality of data recognition results provided by the plurality of data-category recognizers, as a most suitable voice recognition result, based on the command provided by the command recognizer.