diff --git a/scsh/odbc/odbc.h b/scsh/odbc/odbc.h
index 21fe519..2982364 100644
--- a/scsh/odbc/odbc.h
+++ b/scsh/odbc/odbc.h
@@ -12,6 +12,7 @@
 #define ODBC_GET_CONNECT_ATTR_MAX_LEN 255
 #define ODBC_GET_STMT_ATTR_MAX_LEN    255
 #define ODBC_GET_DATA_MAX_STR_LEN     255
+#define ODBC_DESCRIBE_COL_MAX_STR_LEN 255
 
 #define ODBC_DEBUG_MSGS            1
 
@@ -66,6 +67,15 @@ static s48_value sql_timestamp_record_type = S48_FALSE;
 #define SR_SQL_NUMERIC_SIGN      2
 #define SR_SQL_NUMERIC_VALUE     3
 
+/* corresponds to odbc-column */
+static s48_value odbc_column_record_type = S48_FALSE;
+
+#define SR_ODBC_COLUMN_NAME      0
+#define SR_ODBC_COLUMN_TYPE      1
+#define SR_ODBC_COLUMN_SIZE      2
+#define SR_ODBC_COLUMN_DIGITS    3
+#define SR_ODBC_COLUMN_NULLABLE  4
+
 /*
  *
  * PART 1
@@ -104,7 +114,7 @@ s48_value odbc_sql_connect(s48_value connection_handle,
  */
 
 /* Returns a list of available data sources. */
-s48_value odbc_sql_data_sources(s48_value env_handle, s48_value direction);
+s48_value odbc_sql_data_sources(s48_value env_handle);
 
 /* Returns the list of installed drivers and their attributes. */
 s48_value odbc_sql_drivers(s48_value env_handle);
@@ -217,6 +227,9 @@ void check_sql_get_data_result(SQLRETURN retval, SQLHSTMT stmt_handle);
 
 s48_value odbc_sql_fetch(s48_value stmt_handle);
 
+s48_value odbc_sql_num_result_cols(s48_value stmt_handle);
+
+s48_value odbc_sql_describe_col(s48_value stmt_handle, s48_value column_number);
 
 /*
  *