[TYPO3-english] Modifying extensions db structure after creation

[Xavier Perseguers]

Hi,

> i have created an extension and worked through setting things up correctly in the plugins Class. Now, i see that i have missed fields in the DB. And would like to change names of existing ones. How would i best alter the db? 
> 
> Is it safe to just alter the db (by hand) and write changes accordingly in ext_tables.sql . How is the connection being made so that the BE knows what field type to display for a certain field?

Yes, if you know what you do, you may easily alter DB manually and 
change the ext_tables.sql file accordingly (do not forget the associated 
TCA).

Regards

-- 
Xavier Perseguers
DBAL-Member

http://xavier.perseguers.ch/en/tutorials/typo3.html