i think that a directory is like the yellow pages. it gives you info of how to find stuff (phone numbers, addresses, contacts etc.) catalogues are more advertisements and stuff. hope this helps!
A directory is optimized for read operations, while a database is optimized for write and change operations. Therefore, any data that is read many more times than it is written or modified is a good...
drive is the partition on your hard disk - c:, d: etc are examples. softwares & files are stored in directories which are stored inside the drives of a hard disk. the hard disk is physical,...