Entries are grouped into generic object classes based on the type of object they represent. Examples of object classes are Country, Organizational-Person, and Application-Entity. All entries contain a special attribute, the object class attribute, indicating to which object class (or classes) they belong.
Entries that model a certain object and contain information about the object in terms of attributes are called object entries. The directory contains a second type of entry, which is a pointer to an object entry, called an alias entry. Alias entries are discussed in Aliases.
In summary (as shown previously in the figure, The Structure of the DIB), the DIB is made up of entries, each of which contains information about objects. Entries consist of attributes; each attribute has a type and one or more values.
X.500 Naming Concepts describes how objects are organized in the DIB. The following figure shows an example of an entry describing Organizational-Person.
A Directory Entry Describing Organizational Person
