ASE (unlike many other OODBMS) requires no special compiler or preprocessor. And still it is able to 
provide a high level of transparency.<P>

<H2> <A NAME = "features">Features</A></H2>
Lets now describe key features of DyBASE architecture. 

<H3> <A NAME = "pbs">Persistency by reachability</A></H3>

DyBASE is implementing <I>persistency by reachability</I> approach. Object of any class derived from 
<code>Persistent</code> base class is considered as persistent capable.  It is automatically made
persiste