Though the bookseller might decide to shelve the book in one category, that book may have multiple BISAC headings assigned to it in the computer system.
尽管书商可能决定把这本书放到某一个类别下面，但是它在电脑系统里可能属于好几个BISAC的类别。
2
Data is organized in a number of categories - Sales, Security, Computer, Internet, Communication, Financial Management, Training, etc. -, each category being further organized in sub-categories.