Permaculture Information Web

["Marco Stahl" <marco.stahl AT gmx.net>]

Hi all!

Maybe its possible to express Relationships as INPUTS/OUTPUTS of an entity
(plant, animal, human, machine,...).

An Entity could also be a category.

Example:

entity | parent
---------------
creature NULL
animal   creature
plant    creature
bean     plant
hemp     plant


entity  | OUTPUT
---------------
bean      nitrogen
hemp      climb help
hemp      seed
hemp      fibre


entity  | INPUTS
---------------
bean      climb help
hemp      nitrogen


We could also include the amount of the produced or needed product and
reduce OUTPUT and INPUT to INPUT/OUTPUT. 

entity    | (INPUT)/OUTPUT    | amount
-------------------------------------
bean      nitrogen          100
bean      climbhelp         -100  
hemp      nitrogen          -100
hemp      climb help         50
hemp      seed               50
hemp      fibre              50


If Hemp is normaly a average "climb help" but a good one for beans, we could
express that in this way:

entity    | (INPUT)/OUTPUT    | amount
-------------------------------------
bean      nitrogen          100
bean      climbhelp         -100  
hemp      nitrogen          -100
hemp      climb help         50
hemp      climb help bean    100
hemp      seed               50
hemp      fibre              50

or alternativ:

entity    | (INPUT)/OUTPUT    | amount | targetentity
--------------------------------------------------
bean      nitrogen          100         
bean      climbhelp         -100  
hemp      nitrogen          -100
hemp      climb help         50
hemp      climb help         100        bean
hemp      seed               50
hemp      fibre              50


Advantage of this approach:
---------------------------

* No need for writing 10000000 relationshipentries just for 
  the fact, that 100 plants produce something that all other
  plants need (can even reduced/automated more with help
  of categories)
* you can easely integrate other entities than plants
* you can easely express uses as products (and inputs of the entity human)
* you could even express stuff like "a plant needs wet soil, high
temperature"

* maybe: (semi)automatic guild/permaculture-design-generation


I hope you like my ideas,

Saludos, Marco

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