Move forward through the table from the beginning, looking for a row that exactly matches a value or full set of values in the current index.
Boolean findFirst( )
true if successful, false otherwise
To specify the value for which to search, set the column value for each column in the index. The cursor is left on the first row that exactly matches the index value. On failure the cursor position is after the last row (isEOF).
Each search must be preceded by a call to the findBegin method.