public Data_Manager(string DbServer)
{
park = new Machine_park();
db = new Database_adapter(DbServer);
}
public Data_Manager(string DbServer, string DbName, string user, string password)
{
park = new Machine_park();
db = new Database_adapter(DbServer, DbName, user, password);
}
public Data_Manager()
{
park = new Machine_park();
db = new Database_adapter();
}