he following types of search:<P>

<OL>
<LI>key is equals to VAL
<LI>key belongs to [MIN_VAL, MAX_VAL]
<LI>key belongs to [MIN_VAL, MAX_VAL)
<LI>key belongs to (MIN_VAL, MAX_VAL]
<LI>key belongs to (MIN_VAL, MAX_VAL)
<LI>key is greater than MIN_VAL
<LI>key is greater or equals to MIN_VAL
<LI>key is less than than MAX_VAL
<LI>key is less than or equals to MAX_VAL
</OL><P>

<H3> <A NAME = "transaction">Transaction model</A></H3>

DyBASE preserve consistency of the data in case of system or application failure.