Doesn't make sense! In short, the author wants to load all data into main-memory and work upon it. That is possible, if the data is small enough and the main-me

Doesn't make sense! In short, the author wants to load all data into main-memory and work upon it. That is possible, if the data is small enough and the main-memory is big enough. Often it is not and therefore programmers - with enough time and experience - use paging and caching. The actual problem of the described organization is there data organization. Not UNIX.