what are similarities and differences between demandpaged memory management and segmented paged memorymanagement.

Similarities and differences between demand paged memory management and segmented paged memory management are:

In demand paged memory, it bring a page into the memory only when it is needed, so there is less I/O & memory needed. On the other hand, segmented paged memory based on common practice by programmer structure their programs in logical group of codes. In demand paged, it require the use of high speed direct access storage device that it can directly work with the CPU. Whereas, in segmented paged a program is compile and segment set up according to program's structural group. Demand paging made virtual memory widely used and in segmented paged memory is dynamically allocated. Similarities between both demand and segmented paged is that there is a use of job table in both memories.