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7.1.12. Conceptual Tables Connected: An Internet Encyclopedia
7.1.12. Conceptual Tables

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7.1.12. Conceptual Tables

7.1.12. Conceptual Tables Management operations apply exclusively to scalar objects. However, it is sometimes convenient for developers of management applications to impose an imaginary, tabular structure on an ordered collection of objects within the MIB. Each such conceptual table contains zero or more rows, and each row may contain one or more scalar objects, termed columnar objects. This conceptualization is formalized by using the OBJECT-TYPE macro to define both an object which corresponds to a table and an object which corresponds to a row in that table. A conceptual table has SYNTAX of the form:

     SEQUENCE OF <EntryType>

where <EntryType> refers to the SEQUENCE type of its subordinate conceptual row. A conceptual row has SYNTAX of the form:


where <EntryType> is a SEQUENCE type defined as follows:

     <EntryType> ::= SEQUENCE { <type1>, ... , <typeN> }

where there is one <type> for each subordinate object, and each <type> is of the form:

     <descriptor> <syntax>

where <descriptor> is the descriptor naming a subordinate object, and <syntax> has the value of that subordinate object's SYNTAX clause, normally omitting the sub-typing information. Further, these ASN.1 types are always present (the DEFAULT and OPTIONAL clauses are disallowed in the SEQUENCE definition). The MAX-ACCESS clause for conceptual tables and rows is "not-accessible".

Next: Creation and Deletion of Conceptual Rows

Connected: An Internet Encyclopedia
7.1.12. Conceptual Tables


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