DVD-R, DVD-RW, DVD-RAM

[Emmanuel]

I Idy,

Are DVD-R,DVD-RW and DVD-RAM just the same?

I mean can the DVD-(R/RW) used in computers, the same as the DVD-RAM used in for DVD recorders like the FOSTEX PD6 or the back-ups of the hardisc recorders?

Thanks.

Emmanuel H. Clemente,C.A.S.