The Java SqlConnection Interface

 
    public interface SqlConnection
    {
        /**
        * Execute SQL query.
        * @param query SQL query with '?' used as parameter placeholder.
        * @return cursor through selected tuples
        */
        public SqlResultSet executeQuery(String query, Object... params);
 
        /**
        * Execute SQL update statement
        * @param stmt SQL DML statement with '?' used as parameter placeholder.
        * @return number of affected (updated, inserted, deleted) records
        */
        public int executeStatement(String stmt, Object... params);
 
        /**
        * Close this connection.
        */
        public void disconnect();
 
        /**
        * This is internal method which is invoked by SqlResultSet and should not be used by application
        */
        public void detachResultSet(SqlResultSet result);
    };