 An entry consists of a set of attributes, each attribute with one or more values.Each entry has a unique Distinguished Name, formed by combining its Relative Distinguished Name (RDN), one or more attributes of the entry itself, and the RDNs of each of the superior entries up to the root of the DIT.As LDAP implements a very similar data model to that of X.500, there is further description of the data model in the article on LDAP.