Syntaxes; B.1.1 Syntaxes - Novell OPEN ENTERPRISE SERVER 2.0 SP2 - DOMAIN SERVICE FOR WINDOWS Manual

Attribute
oMObjectClass
LinkID
Section B.1.1, "Syntaxes," on page 222
Section B.1.2, "Attribute Mappings," on page 223
Section B.1.3, "Special Attributes," on page 224
Section B.1.4, "Class Mappings," on page 226

B.1.1 Syntaxes

The syntax for an attribute defines the storage representation, byte ordering, and matching rules for
comparisons. When you define a new attribute, you must specify both the attributeSyntax and the
oMSyntax numbers of the syntax that you want for that attribute. The attributeSyntax number is an
object identifier, and the oMSyntax number is an integer. oMSyntax is defined by the XOM
specification. Using this model, the syntax can provide detailed syntax definitions. For example,
distinct oMSyntax attributes distinguish several types of printable strings, according to such factors
as the supported character set and whether case is significant.
eDirectory comes with a predefined set of syntaxes. Most of the syntaxes required to support Active
Directory applications are supported directly or indirectly by eDirectory. The following table lists
the valid syntaxes for attributes in the DSfW schema. It also shows how each DSfW syntax is
internally mapped to eDirectory syntax. Refer to the
Schema," on page 226
Mapping Valid Syntaxes for Attributes in the DSfW Schema
Table B-2
Syntax
Object(DN-DN)
222 OES 2 SP2: Domain Services for Windows Administration Guide
Syntax Description
String For attributes with object syntax (OM-syntax = 127), this is
(Octet) the Basic Encoding Rules (BER) encoded object identifier
of the XOM object class.
For more information about BER encoding, see
Comments (RFC) 2251 (http://www.ietf.org/rfc/rfc2251.txt)
in the IETF RFC Database.
oMObjectClass is not a mandatory attribute.
Integer The value that determines whether the attribute is a linked
attribute. Linked attributes make it possible to associate
one object with another object. A linked attribute represents
an interobject distinguished-name reference.
A forward link references a target object in the directory; a
back link refers back to the source object that has a forward
link to it.
An even integer denotes a forward link; an odd integer
denotes a back link.
LinkID is not a mandatory attribute.
for more information on automating mapping.
Attribute
oMSyntax eDirectory Syntax
Syntax
2.5.5.1 127 SYN_DIST_NAME
Section B.2, "Extending the Third-Party
Description
The fully qualified name of an
object in the directory.
Request for