query concerning vacuum and tablespaces

[Colton Smith <smith@xxxxxxxxxxxxxxxxx>]

Hi

I have two general questions:

Let's say I vacuum a table called 'foo'.  Does that release memory for 
subsequent reuse by table 'barr'?  Or is the marked memory restricted 
solely for later reuse by table 'foo'?  I get the impression the latter 
is the case.  I'm I mistaken?

Is it possible to move an already populated table or index from one 
tablespace to another?

Thanks so much!