Have you ever watched those horror or scary movies in which there is a telephone involved? You see that there is pattern of the people who die, and those who normally die are the ones who answer the telephone. Or perhaps you have watched movies in which there is a person is continually threatened by another person and that person reveals a deep side in them.
Well whenever we talk about different searching mechanisms, we frequently use the words look up and directories. These two words are closely associated. A directory is some collection of records. These records contain person’s information such as name, address, phone number, email address or business information. Moreover, look up is a broader term which is used to define the search procedure which is implied to find a particular record.