Via Eloon who got it from somewhere else; Kabalarian Name Analysis.
The name of Dave creates a quick, analytical, and clever mind; you are creative, versatile, original, and independent. You have large ambitions, and it is difficult for you to be tolerant and understanding of those who desire less in life or who are more slow and methodical by nature. Patience is not your forte. You do, however, have leadership ability and would never be happy in a subservient position. You are ambitious and aggressive by nature. You would be happiest in positions where you are free to express individually and creatively and where opportunities are not restricted; you desire freedom, and do not tolerate being possessed by others. You appreciate change and travel, and the opportunity to meet and mix with others, and to influence them with your creative ideas. You are very self-confident and feel you can accomplish anything you set out to do, and you can, although, this name does not allow proper completion of undertakings, and forced changes cause financial losses and bitter experiences. This name also creates caustic expression and moods which prevent harmony and happiness in close association.
That's actually not too bad. I'm not as creative as it suggests and I don't have many aggressive tendencies. But apart from that and the last sentence, which is complete rubbish, it's pretty much spot on.