There are "AlterTable" command in dbx metadata?

How do I use the dbx metadata to modify an existing database? I'm trying, but I just able to create a new tables, with the new columns, new definitions... For example, can I add a new column into an existing database?

The "C开发者_如何学JAVAreateTable" command dont makes changes... i'm right? There are "AlterTable" command or something like this?

I'm using Delphi XE with Firebird

Thanks

Use SQL commands directly, then you can do anything that your database supports. No need to have DBX interfering with that process.