UltraLite Static C++ User's Guide
C++ API Reference
ULCursor class
bool Relative( ul_fetch_offset offset )
Moves the cursor position relative to the current position. If the row does not exist, the method returns false, and the cursor is left at AfterLast() if offset is positive, and BeforeFirst() if offset is negative.
offset The number of rows to move. Negative values correspond to moving backwards.
true (1) if the row exists.
false (0) if the row does not exist.