Inserting Information into Existing Custom Data Object Using API?

Question

Hello,
I have setup a Custom Object and I have the ID for this object. All we're wanting to insert in this object is First Name, Last Name, Email. I have that information in code-form and I have both the BULK API and REST api at our disposal. We are having issues figuring out the API call we want to execute to insert this information into this Custom Object.
If someone could point us in the right direction that would be amazing. Thank you!

Answer 1

I solved the problem.
when we are selecting the image data from access database select that as getbytes
          while(rs.next())
               count++;
               picbarray = rs.getBytes("PICTURE");     
when inserting to the oracle db
PreparedStatement st1 = null;
String sql = "insert into (colmn1,colmn2,colmn3,comn4,colmn5) values(?,?,?,?,?)";
st1 = con.prepareStatement(sql);     
st1.setString(1, val1);
     st1.setString(2, val2);
     st1.setString(3, val3);
     st1.setBytes(4, picbarray);     
st1.setString(5, val5);
     st1.executeUpdate();