i am a citytech student.

i have question regarding keeping data on memory.

every single prof talk about storing data in a memory.

where does data r being kept in real world ? on memory or in Hard Drive ?

if its stores in memory ? when memory gets croupted. how can we retrive the datat from that memory ?

N if Hard drive crashed. how can we retrive data?

when data r being kept on memory . doesnt it lose all the data on power failer ?

please clear my mind giving me a solution

thanx

i find this site. maybe this help you to understand some issues

http://members.iweb.net.au/~pstorr/pcbook/book2/memory.htm

Memory and storage.

"In memory" is any data that is stored in the RAM. And by design, it is temporary and volitile, a power failue will cause a loss of this data.

Storage is the HDD, and data writen to it (unless its a chache file or in windows' page file) is permanent and will not be lost if the power goes out.

If data becomes corrupted, then it more than likely cannot me recovered (hense the term, corupt).

If a HDD crashed, thats a differnt story, you can always retreive data from that, its just a matter of how much money you are willing to spend to get it back.

Edit: Or you can read that link lol /\