Question: Logging of updates is not done explicitly in persistent
Logging of updates is not done explicitly in persistent programming languages. Describe how page access protections provided by modern operating systems can be used to create before and after images of pages that are updated.
Relevant QuestionsExplain the difference between a system crash and a “disaster.” In typical client–server systems the server machine is much more powerful than the clients; that is, its processor is faster, it may have multiple processors, and it has more memory and disk capacity. Consider instead a ...Consider a network based on dial-up phone lines, where sites communicate periodically, such as every night. Such networks are often configured with a server site and multiple client sites. The client sites connect only to ...Consider a distributed system with two sites, A and B. Can site A distinguish among the following?• B goes down.• The link between A and B goes down.• B is extremely overloaded and response time is 100 times longer ...Consider the relations employee (name, address, salary plant-number) machine (machine-number, type plant-number) Assume that the employee relation is fragmented horizontally by plant-number, and that each fragment is stored ...
Post your question