class TSQLServer: public TObject

 The db should be of the form:  <dbms>://<host>[:<port>][/<database>],
 e.g.:  mysql://pcroot.cern.ch:3456/test, oracle://srv1.cern.ch/main,
 pgsql://... or sapdb://...
 The uid is the username and pw the password that should be used for
 the connection. Depending on the <dbms> the shared library (plugin)
 for the selected system will be loaded. When the connection could not
 be opened 0 is returned.

 Execute sql query.
 Usefull for commands like DROP TABLE or INSERT, where result set
 is not interested. Return kTRUE if no error

 returns error code of last operation
 if res==0, no error
 Each specific implementation of TSQLServer provides its own error coding

 returns error message of last operation
 if no errors, return 0
 Each specific implementation of TSQLServer provides its own error messages

 reset error fields

 set new values for error fields
 if method is specified, displays error message

 submit "START TRANSACTION" query to database
 return kTRUE, if successful

 submit "COMMIT" query to database
 return kTRUE, if successful

 submit "ROLLBACK" query to database
 return kTRUE, if successful

 Return list of user tables
 Parameter wild specifies wildcard for table names.
 It either contains exact table name to verify that table is exists or
 wildcard with "%" (any number of symbols) and "_" (exactly one symbol).
 Example of vaild wildcards: "%", "%name","___user__".
 If wild=="", list of all available tables will be produced.
 List contain just tables names in the TObjString.
 List must be deleted by the user.
 Example code of method usage:

 TList* lst = serv->GetTablesList();
 TIter next(lst);
 TObject* obj;
 while (obj = next())
   std::cout << "Table: " << obj->GetName() << std::endl;
 delete lst;

 Tests if table of that name exists in database
 Return kTRUE, if table exists

 Producec TSQLTableInfo object, which contain info about
 table itself and each table column
 Object must be deleted by user.

 set printf format for float/double members, default "%e"

 return current printf format for float/double members, default "%e"