How to alter the schema of a database to introduce newfeaturesor change the current features
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From: Pete Ford on 15 Jul 2010 04:07 On 15/07/10 06:03, Paul M Foster wrote: > On Wed, Jul 14, 2010 at 09:28:53PM -0700, Slith One wrote: > >> I'm developing an app using Zend Framwork using Git for version control. >> >> What is the best approach for updating the schema and the database >> when one of us makes an update to the db structure? >> >> currently, we have to blow out the tables and recreate them manually >> to reflect the new updates. > > I'm probably being naive, but don't you have an ALTER TABLE sql > statement available to you? > > Also, for what it's worth, I don't build tables manually (at the command > line or whatever). I always create a script which will build the tables > I need. If, for some crazy reason, I do have to restart from scratch, > it's a simple matter to alter that script and re-run it. > > Paul > Scripting is the way to go for database changes: every time I have to make a schema change I write an SQL script to do the job, including any manipulation of data required. Then I make a copy of the real data and test the hell out of the change script before going live with it. You can commit the database script to your source control at the time you commit the code changes, and then when you update the live system you run any new scripts at the same time. -- Peter Ford, Developer phone: 01580 893333 fax: 01580 893399 Justcroft International Ltd. www.justcroft.com Justcroft House, High Street, Staplehurst, Kent TN12 0AH United Kingdom Registered in England and Wales: 2297906 Registered office: Stag Gates House, 63/64 The Avenue, Southampton SO17 1XS |