In this chapter Badke describe what is database and how to search database with keywords and hierarchies. A database is a collection of something or information that is organized and by order. Database make research easier because it set up with alphabetically and organized search with the data we need . He gives two mechanisms of research database : the key word searching and the hierarchies. most of us familiar with the key words searching . the key word searching is type exactly word which you want to find out in a database. with the key word searching , we get the information about which we type. sometimes we don’t get what we looking for . Because there are lots of similar database huge so we need to be specific with our key words. Badke give very useful ideas for key words searching such as using synonyms, and,or ,* ?.
and Hierarchiers.i’m confused about this technical.