> In this Artima interview, JBoss CTO Sacha Labourey
> explains the concept of a virtual database tier, and how
> virtual database tools can help access data from multiple
> legacy databases:
>
>
http://www.artima.com/lejava/articles/javaone_2007_sacha_la> bourey.html
>
> What techniques do you prefer when you have to access
> multiple legacy databases from one application?
Interfaces.