public Database()
 {
     Tables      = new TableCollection();
     Integrities = new IntegrityCollection();
     Name        = "";
     Title       = "";
 }
 public Table()
 {
     Name        = "";
     System      = "";
     Title       = "";
     Fields      = new FieldCollection();
     Index       = new IndexCollection();
     Integrities = new IntegrityCollection();
 }