Point-in-time recovery

Point-in-time recovery in the context of computers is a system whereby a set of data or a particular setting can be restored or recovered from a time in the past. An example of this is Windows XP's feature of being able to restore operating system settings from a past date (before data corruption occurred, for example), or PostgreSQL's feature of being able to view a database table and its data as it was at a particular date in the past.

Getting away from the computer context - the use of the phrase "a point is time" refers to an impossibility. Time as we know itis nothing more than a concept. Man has decided to measure time by setting up clocks after the original idea of measuring time by the rising and setting of the sun. You cannot pin-point any part of a concept so in reality there is no such thing as "a point in time." If wanting to use the phrase in a conversation it should be replaced by either "now", or "at this time".