FUNCTIONS STATE: 

- db_driver_add_column
- db_driver_bind_update
+ db_driver_close_cursor
+ db_driver_close_database
x db_driver_create_database 
- db_driver_create_index
- db_driver_create_table 
- db_driver_delete
x db_driver_delete_database
P db_driver_describe_table     - add table and column privileges
                                 add column default value
				 add missing column types
x db_driver_drop_column
x db_driver_drop_constraint
- db_driver_drop_index
+ db_driver_drop_table
+ db_driver_execute_immediate
P db_driver_fetch              - add missing types
x db_driver_find_database
+ db_driver_finish
+ db_driver_init
- db_driver_insert
x db_driver_list_constraints
+ db_driver_list_databases
- db_driver_list_indexes
+ db_driver_list_tables
P db_driver_open_database      - add user and password, ? datasource
- db_driver_open_insert_cursor
+ db_driver_open_select_cursor
- db_driver_open_update_cursor
- db_driver_update
x db_driver_version

+ implemented and works, but you can improve it
P partially implemented, needs improvements
- not implemented, waiting for you
x not planned now - impossible or not urgent