<sql:setDataSource   
     driver="sun.jdbc.odbc.JdbcOdbcDriver"
     url="jdbc:odbc:skdb"
     user=""
     password=""
     var="ds"
     scope="application" />

<sql:query var="groups" dataSource=" ds">
   SELECT * FROM GROUPS
</sql:query>

<table border="1">
<c:forEach var="row" items="${groups.rows}">
<tr>
  <th>id</th>
  <th>name</th>
</tr>
<tr>
  <td><c:out value="${row.id}"/></td>
  <td><c:out value="${row.name}"/></td>
</tr>
</c:forEach>
</table>

java.sql.DriverManager.registerDriver( new  sun.jdbc.odbc.JdbcOdbcDriver());
Connection con= java.sql.DriverManager.getConnection("jdbc:odbc:skdb"); 
...