The volume of the archives is called the case file, the case file is a combination of a number of documents linked to each other and put into the volume folder, the volume of the archives of the storage unit, but also the whole file system arrangement, cataloging and statistics of the basic unit. And pieces are the most basic unit of records management, more than one piece can be placed in a case file.
Difference:
1, contains different items.
File: including the full name, class name, file title, volume of documents from the date, custody period, pieces (pages) number, filing number, file number.
Pieces: including sequential number, symbol, responsible person, title, date, page number.
2, expressed in different quantifiers.
Case file: by a number of interlinked documents combined and put into the volume folder, the volume of the archives custody unit.
Pieces: the most basic unit of records management, including how many pieces of documents in the archive bag.
3, containing the relationship is not the same.
Files: including pieces, pieces can not cover the volume.
Pieces: a component of the case file.
Baidu Encyclopedia - Pieces
Baidu Encyclopedia - Case File