Research on normalization design for complex object schemes

As development and popularization for Internet and web, information systems that store a huge amount of information, such as digital library, have been evolved. Structures for objects in such information systems become more and more complex. There is a little research on normalization design for complex object schemes. The paper shows our research on normalization design for complex object schemes. The novel ideas include: (1) definition and properties for object dependency; (2) definition and properties for object normal form; (3) an algorithm deriving a normal object scheme forest; and (4) some properties of a set of object dependencies properties