Netscape NETSCAPE DIRECTORY SERVER 7.0, Справочник

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Chapter 1
About Schema
This chapter provides an overview of some of the basic concepts of the directory
schema and lists the files in which the schema is described. It describes object
classes, attributes, and object identifiers (OIDs) and briefly discusses extending
server schema and schema checking.
This chapter contains the following sections:
• Schema Definition (page 15)
• Schema Supported by Directory Server (page 19)
• Object Identifiers (OIDs) (page 21)
• Extending Server Schema (page 22)
• Schema Checking (page 22)
Schema Definition
The directory schema is a set of rules that defines how the data can be stored in the
directory. The data is stored in the form of directory entries. Each entry is a set of
attributes and their values. Each entry must have an object class. The object class
specifies the kind of object the entry describes and defines the set of attributes it
contains. The schema defines the type of entries allowed, their attribute structure
and the syntax of the attributes.The schema can be modified and extended if it does
not meet your required needs.
To find detailed information about object classes, attributes, and how the Netscape
Directory Server (Directory Server) uses the schema, refer to the
Netscape Directory
Server Deployment Guide.