id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
5739	McGee, Rob	Two Types of Designs for On-Line Circulation Systems	1972-09-01	19	.pdf	application/pdf	8449	558	58	"absence file" to a set of records for only those items that have been charged 2) an item file of bibliographic records for all library volumes or titles, or for file of records for circulating items, if transaction data for them are more design of data management capabilities are developed explicitly for circulation control, to the exclusion of other library data processing requirements. The second approach is to create a circulation system that is operationally independent of other library data processing activities, but designed It is possible, in systems with user and item files, to access records by In most absence systems user identification number and full item data universe of items by the library's acquisitions, cataloging, circulation control, In on-line circulation systems built around an absence file, the data The files of current item systems hold less-than-full bibliographic records: Bell Laboratories library utilizes two basic fixed length 	./cache/5739.pdf	./txt/5739.txt