[pstricks] B-Tree with pstricks

[Manjusha Joshi]

Hi,

I want to draw B-Tree with pstricks.  With pstree, it produce it branches from 
one point closed to each other. I want to produce it from two sides of nodes 
e.g. /(oval node)\ like this branches should occur.

Thanks in advance.
Regards,
-Manjusha