2., Next, write down a function that takes a binary tree of the type you defined, and returns a tuple with its first element being a list of operators, and its second element being a list of the numeric values in the nodes. That is, the function's type should be val function name : ('a, 'b) tree -> 'b list 'a list -

How many queries remain before you can determine whether database as a service is the optimal solution for your library's needs?

Explain the concept of deadlock handling in distributed transactions.

Explain the concept of distributed hash tables (DHTs) and their use in distributed systems like peer-to-peer (P2P) networks.