だっか

expression

is it?; is that so?

Kansai dialect equivalent of ですか or なのか. Used to seek confirmation or express mild surprise. Casual but not rude.

• 明日あした、大おお阪さかに行いくんやけど、一いっ緒しょに行いくんやったら、ええでっか？

  I'm going to Osaka tomorrow; if you're coming along, is that okay?

• これ、ほんまに美味おいしいんやけど、食たべてみるんやったら、どうでっか？

  This is really delicious; if you'd like to try some, how about it?