rfc1804.txt

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RFC 1804          Schema Publishing in X.500 Directory         June 1995


5. The Meta-Schema

experimental = 1.3.6.1.3

schema OBJECT IDENTIFIER
        ::= {experimental 65}

schemaObjectClass OBJECT IDENTIFIER
        ::= {schema.1}

schemaAttribute OBJECT IDENTIFIER
        ::= {schema.2}

subschema OBJECT CLASS
    Subclass of TOP
        MUST CONTAIN {
            commonName
            - -  For naming
        }
        ::= {schemaObjectClass.1}

objectClass OBJECT CLASS
    Subclass of TOP
        MUST CONTAIN {
            objectIdentifier
                - - This field stores the object identifier of object
                - - represented by an object class entry. This attribute
                - - is used for naming an object class entry.
        }
        MAY CONTAIN {
            commonName,
                 - - This field is used to store the name of the object
            mandatoryNamingAttributes,
            mandatoryAttributes,
            optionalNamingAttibutes,
            optionalAttributes,
            obsolete,
            description,
            subClassOf
        }
        ::= {schemaObjectClass.2}

attributeType OBJECT CLASS
    Subclass of Top
        MUST CONTAIN {
            objectIdentifier
        }
        MAY CONTAIN {



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RFC 1804          Schema Publishing in X.500 Directory         June 1995


             commonName,
                - - used to store the name of the attribute type
             constraint,
             attributeSyntax,
             multivalued,
             obsolete,
             matchRules,
             description
        }
        ::= {schemaObjectClass.3}

matchingRule OBJECT CLASS
     Subclass of Top
        MUST CONTAIN {
             objectIdentifier
        }
         MAY CONTAIN {
             commonName,
             matchtype,
             description,
             obsolete
        }
        ::= {schemaObjectClass.4}

objectIdentifier ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            objectIdentifierSyntax
       ::= {schemaAttribute.1}

mandatoryNamingAttributes ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.2}

mandatoryAttributes ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.3}

optionalNamingAttibutes ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.4}

optionalAttibutes ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.5}



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RFC 1804          Schema Publishing in X.500 Directory         June 1995


obsolete ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            BOOLEAN
                           -- DEFAULT FALSE
       ::= {schemaAttribute.6}

subClassOf      ATTRIBUTE
        WITH ATTRIBUTE-SYNTAX
                SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.7}

constraint ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            Constraint
       ::= {schemaAttribute.8}

Constraint ::=Choice {
             StringConstraint,
             IntegerConstraint
        }

StringConstraint ::= SEQUENCE {
             shortest INTEGER,
             longest  INTEGER
        }

IntegerConstraint ::= SEQUENCE {
             lowerbound INTEGER,
             upperbound INTEGER OPTIONAL
        }

attributeSyntax ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
              ASN1DataType
       ::= {schemaAttribute.9}

multivalued ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            BOOLEAN             -- DEFAULT FALSE
       ::= {schemaAttribute.10}

matchRules ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX
            SET OF OBJECT IDENTIFIER
       ::= {schemaAttribute.11}

matchtype ATTRIBUTE
       WITH ATTRIBUTE-SYNTAX



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RFC 1804          Schema Publishing in X.500 Directory         June 1995


            INTEGER {
             PRESENT                    (0),
             EQUALITY                   (1),
             ORDERING                   (2),
             CASESENSITIVEMATCH         (3),
             CASEINSENSITIVEMATCH       (4)
            }
       ::= {schemaAttribute.12}


6. References

   [1] CCITT. "Data Communication Networks: Directory", Recommendations
       X.500 - X.521 1988.

   [2] CCITT. "Data Communication Networks: Directory", Recommendations
       X.500 - X.525 1993.

   [3] Barker, P., and S. Kille, "The COSINE and Internet X.500 Schema",
       RFC 1274, University College London, November 1991.

   [4] Howes, T., "Schema Information in the X.500 Directory", Work in
       Progress, University of Michigan, July 1992.

   [5] Howes, T., Rossen, K., Sataluri, S., and R. Wright, "Procedures
       for Formalization, Evolution, and Maintenance of the Internet
       X.500 Directory Schema", Work in Progress, June 1995.

7. Security Considerations

   Security issues are not discussed in this memo.




















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RFC 1804          Schema Publishing in X.500 Directory         June 1995


8. Authors' Addresses

   Glenn Mansfield
   AIC Systems Laboratories,
   6-6-3, Minami Yoshinari, Aoba-Ku, Sendai,
   Japan

   Phone: [phone]
   Fax: [phone]
   EMail: [e-mail]


   P. V. Rajeev
   Hughes Software Systems,
   2nd Floor, International Trade Tower,
   Nehru Place, New Delhi,
   India

   EMail: [e-mail]


   S. V. Raghavan
   Department of Computer Science and Engineering,
   Indian Institute of Technology, Madras 600 036,
   India

   EMail: [e-mail]


   Tim Howes
   University of Michigan
   ITD Research Systems
   535 W William St.
   Ann Arbor, MI 48103-4943, USA

   Phone: [phone]
   EMail: [e-mail]














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