8. A search method comprising: providing a structured database, the structured database storing a plurality of records having a data structure; and conducting a full-text search in the structured database, wherein the data structure comprises a title field, the title field comprises at least one sub-field, each of the at least one sub-field 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.
11. The search method as recited in claim 8 , wherein a digit number of each of the at least one sub-field in the title field is fixed.