@OP, I don't get your question. If you need a quick reference to playing styles, check out John Myung's instructional video on YouTube. Since this is a rock/metal thread, I presume you are into heavy music. Similarly, you can check Flea, Cliff Burton, Billy Sheehan etc. I think a musician as a whole, not just bassists, have to listen to a wide range of genres so as to incorporate elements of each in order to bring out the melody of the song you're playing/covering.