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... identifier to another, often with an
inverse capability. The traditional methods are to search or use a
precomputed index of some kind.
...
...
Searching is impractical when the search is too large, and
precomputed indexes are possible only when it is possible to specify
search ...
... search is too large, and
precomputed indexes are possible only when it is possible to specify
search criteria in advance, and pay for the resources necessary to
build the index. For example, it is impractical to search the entire
...
... search criteria in advance, and pay for the resources necessary to
build the index. For example, it is impractical to search the entire
domain tree ...
... TCP ports as a natural extension, as are combinations
of YPs using search lists to merge the two.
...
... domain tree
organized to optimize retrieval by search key and distribution via
normal DNS rules. The name used as a key must include:
...
... be instructed to use "YP.<local-domain>" followed by "YP." as a
search list. Thus, if the organization ISI.EDU wished to define
locally meaningful TCP-PORT ...