Deck ledger

Hello to all,I am a newcomer to this forum.
I am in the process of designing a lowlevel deck approx 10x5m,the question i have is can i bolt a ledger directly to the edge of the slab of the house without causing any structural problems. We have excavated down approx 250mm below the brick couse.If this is ok should i be putting a membrane between the timber & concrete.??
Also when bolting bearers to stumps do they have to be notched as I noted recently on a tv show that they bolted the bearers flat to the stumps. thankyou all.

Don't cover the brick/concrete join (termites). Not a fan of decks that close to the ground, but its OK to bolt to the slab, yes put some damp proof material between the bearer & slab. You're right to question those ####wits on telly, I could show you some of their work near where I live.
1 - 2yrs after the extreme bodgover & it aint a pretty site, so yes do notch in the joists to the posts/stumps. If you want the job to last, use this stuff. http://www.joistrip.com/