The collection of all statements that can be successfully parsed is called the ____ defined by a grammar.

Showthat the following proposed protocol for a timestamp-ordered concurrency control is not recoverable.

Store with each data item the maximum timestamp of any (not necessarily committed) transaction that has read that item and the maximum timestamp of any (not necessarily committed) transaction that has written that item. When a transaction makes a request to read (write) a data item, if the timestamp of the requesting transaction is smaller than the write (read) timestamp in the item, restart the transaction; otherwise, grant the request. What will be an ideal response?

What are the five steps of a switch's operation?

What will be an ideal response?