The following module was proposed for inclusion in the Module List:

  modid:       Table::ParentChild
  DSLIP:       cdhOp
  description: Fast and compact parent-child table lookup
  userid:      MIKEWONG (Mike Wong)
  chapterid:    6 (Data_Type_Utilities)
  communities:

  similar:

  rationale:

    Table::ParentChild implements a cross-linked list in a table with
    hashed headers. Given an unsigned long integer id,
    Table::ParentChild will tell you the unsigned long integer ids of
    all the parents of that item and/or all the children of the item.
    This works especially well with mod_perl, where your entire
    parent-child relationship table can be compactly held in memory for
    incredibly fast lookups. This module works very well with sparsely
    populated relationship tables.

  enteredby:   MIKEWONG (Mike Wong)
  enteredon:   Sat Dec  7 20:34:50 2002 GMT

The resulting entry would be:

Table::
::ParentChild     cdhOp Fast and compact parent-child table lookup   MIKEWONG


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