Continues a findFirst search by moving forward through the table from the current position, looking to see if the next row exactly matches a value or full set of values in the current index.
Boolean findNext( )
true if successful, false otherwise.
The cursor is left on the next row if it exactly matches the index value. On failure the cursor position is after the last row (isEOF).
The findNext method behavior is undefined if the column values being searched for are modified during a row update.