Missing needed skills for startup
anamax: > I have a business idea, which will require a non-trivial database.Non-trivial in what sense?If it's non-trivial in size and you're worried about scaling, just build the simplest thing that will provide the desired functionality and start shipping.Why?  Because you'll have money to solve scaling problems before the db stops working because it has gotten too big.Customers and money are the solution to most problems.