28. A search method comprising: inputting a keyword, wherein the keyword is generated by request information; and conducting a full-text search in a structured database according to the keyword, wherein the structured database stores at least one record, each of the at least one record comprises at least one field, and data stored in the at least one field collectively describe attributes of the at least one record, wherein when the at least one record stored in the structured database matches the keyword, indication data corresponding to the at least one field are output as recognition of an intention included in the request information, wherein the at least one field comprises at least one sub-field, each of the at least one sub-field at least consists of an indication field and a value field, the indication field stores indication data consisting of at least one letter of alphabet, and the value field stores value data consisting of at least one of at least one letter of alphabet, at least one comma and at least one number.
28. A search method comprising: inputting a keyword, wherein the keyword is generated by request information; and conducting a full-text search in a structured database according to the keyword, wherein the structured database stores at least one record, each of the at least one record comprises at least one field, and data stored in the at least one field collectively describe attributes of the at least one record, wherein when the at least one record stored in the structured database matches the keyword, indication data corresponding to the at least one field are output as recognition of an intention included in the request information, wherein the at least one field comprises at least one sub-field, each of the at least one sub-field at least consists of an indication field and a value field, the indication field stores indication data consisting of at least one letter of alphabet, and the value field stores value data consisting of at least one of at least one letter of alphabet, at least one comma and at least one number. 40. The search method as recited in claim 28 , further comprising a search interface unit, the search interface unit being coupled to a search engine and configured to receive the keyword and transmit the keyword to the search engine.