とりあえず絵（モジュールとデータベース）

原寸大

// -*- coding: utf-8 -*-

[

 [

   [

    gv:node --shape=box --label="collection employee" E,

    gv:node --shape=box --label="collection office" O,

   ] | gv:cluster --label="database company" DbC,
   [

    gv:node --shape=box --label="collection product" P,

    gv:node --shape=box --label="collection stock" F,

    gv:node --shape=box --label="collection shop" Ps,

   ] | gv:cluster --label="database product" DbP,

 ] | gv:cluster --label="MongoDB Backend"  --style=filled --fillcolor=pink Mongo,
 [

   [

    gv:node --shape=box --label="collection tmp" T,

    gv:node --shape=box --label="collection test" Te,

   ] | gv:cluster --label="database mem" DbM,
 ] | gv:cluster --label="default-database Backend"  --style=filled --fillcolor=skyblue Def,
  [

   gv:node --label="collection employee" cE,

   gv:node --label="collection office" cO,

   gv:node --label="collection product" cP,

   gv:node --label="collection tmp" cT,

  ] | gv:cluster --label="module db" ModDB,
  gv:edge cE E,

  gv:edge cO O,

  gv:edge cP P,

  gv:edge cT T,
] | gv:graph --label="Storage System"