A sequence of references is said to have spatial locality if things that are referenced close in time are also close in space (nearby memory addresses, nearby sectors on a disk, etc.).
A sequence is said to have temporal locality if accesses to the same thing are clustered in time.
How is address translation in virtual memory?
For every memory access, either to fetch an instruction or data, the CPU must translate the virtual address to a real physical address. A virtual memory address can be considered to be composed of two parts: a page number and an offset into the page
