| 摘要 |
A data transmission dictionary is provided, which is adapted for use by a comput er system for encoding, storing, or retrieving hierarchically related data transmission in formation. The dictionary is comprised of a group of one or more computer searchable definition trees relating to transmission information of the computer system. The trees are deriv ed from a first definition group which includes characteristics of commands, replies or data usable by the computer system. The characteristics include structure and value properti es and restrictions, if any, applying to the commands, replies or data. Each tree repre sents, respectively, a definition of a the command, reply or data to which it relates. Each tree includes a root node identified by name, eg. a codepoint. The root node includes information describing the type of definition tree concerned (i.e. whether it re lates to a command, reply or data), and may include one or more internal or terminal descen dant nodes. These nodes represent components of the definition represented by the tre e. The descendent nodes include level information describing the level of the node with in its tree. The nodes may include attribute information, and may include value requirements relating to transmission information represented by the nodes.
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