What is difference between internal and external data structure?

Answer 1

Internal SortingExternal sortingIn internal sorting all the data to sort is stored in memory at all times while sorting is in progress.In external sorting data is stored outside memory (like on disk) and only loaded into memory in small chunks.The internal sorting methods are applied to small collection of data. The External sorting methods are applied only when the number of data elements to be sorted is too large. internal sorting takes input only which can be fit into

its memory...i.e. it takes small inputexternal sorting can take as much as large input…Internal sort is more flexible as we can alter or update data before and after performing internal sort whereas the same doesn't hold true for external sort.internal sorting is independent of time to read/write a

recordexternal ids dependent on the same