A search using a search string has traditionally offered more multifunctional search strategy for comprehensive information searching on the subject. A search string combines search terms and defines their relationships using Boolean operators, proximity operators, phrases and parentheses which dictate the order of performance of a search string.
After designing a search string it is quite easy to transfer and carry it out in different databases. However a search string always needs to be formulated after database rules, because the search techniques like operators and how to express phrases and different forms of search terms are database specific.There are also different ways in databases to represent a search string.
