1. session::prepare_column_descriptions -> can't find table "information_schema.mdb", does Microsoft Access System(MDB) really have this table?

2. select TableName from MSysObjects -> no permission, seems that "MSysObjects" can only be query in Office Access?

3. use "backend::describe_column", but I can't get the count of column, try...catch is the only way?

4. query data to "rowset". "rowset" has "define" member, but no method to get them.
   PS:
   not row::get_properties, because I need to query the empty table.
   and could you provide more column information, like: nullable, primary key, unique ?

soci version: 4.0.3
compiler: MSVC 2013
OS: win10
I realy like this library, but it's hard to use in sometimes.