Object Identity in Database Systems

The concept of object identity and implementation of object identity in some sys-tems have been explained in literature. Based on an analysis on the idea of data schemein ANSI/X3/SPARC, this paper presents the concept of fulLidentity which includesentity identity conceptual object identity and internal object identity In addition, theequality of objects, which is richer and more practical, is discussed based on the fullidentity of objects. Therefore, the semanics and constructions of the identity for thecom…