Ecolego Wiki

User Tools

Site Tools

Trace:
dependencies_parameter_database

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Next revision 		Previous revision
dependencies_parameter_database [2021/11/22 14:09]
mina created 		dependencies_parameter_database [2023/03/01 19:29]
boris
Line 1: Line 1:
 ====== Dependencies (Parameter database) ====== ====== Dependencies (Parameter database) ======
 Parameter values often have dependencies, such as dependency of atomic element (Iron, Methane, Oxygen), on media (concrete/clay/rock) or location (Paris, Gothenburg, Kampala). From the database point-of-view, the dependencies change the parameter dimension. Kd_soil can be a scalar parameter if only one atomic element is ever considered, a vector if values are available for many elements or a matrix if both atomic elements and different soil types are considered. Parameter values often have dependencies, such as dependency of atomic element (Iron, Methane, Oxygen), on media (concrete/clay/rock) or location (Paris, Gothenburg, Kampala). From the database point-of-view, the dependencies change the parameter dimension. Kd_soil can be a scalar parameter if only one atomic element is ever considered, a vector if values are available for many elements or a matrix if both atomic elements and different soil types are considered.
 +
 +{{dependencies_db.png}}
  
 The database allows up to two dependencies to be defined for a parameter. If more dependencies are required the user must either create several definitions (Kd_soil, Kd_bentonite, Kd_backfill) or use tags (Kd soil, Kd bentonite, Kd backfill). The database allows up to two dependencies to be defined for a parameter. If more dependencies are required the user must either create several definitions (Kd_soil, Kd_bentonite, Kd_backfill) or use tags (Kd soil, Kd bentonite, Kd backfill).
Line 15: Line 17:
  
 Sometimes a dependency is naturally related to another dependency. For instance, the dependency Species is related to the dependency Organism. One can therefore document that a given dependency “maps” to another when a dependency is defined. A typical case is between atomic element and isotope. In the database notation it is said that the atomic element dependency maps to the isotope dependency. Mapping means that a parameter can be used in both the context of its own dependency and in the context of mapped dependency. Sometimes a dependency is naturally related to another dependency. For instance, the dependency Species is related to the dependency Organism. One can therefore document that a given dependency “maps” to another when a dependency is defined. A typical case is between atomic element and isotope. In the database notation it is said that the atomic element dependency maps to the isotope dependency. Mapping means that a parameter can be used in both the context of its own dependency and in the context of mapped dependency.
 +
 +Also see:
 +
 +  *[[Database design]] 
 +  *[[Users and roles]]
 +  *[[Quality assurance]]
 +
 +----
 +
 +\\
 +
 +[[parameter_database_wiki|Back]]
dependencies_parameter_database.txt · Last modified: 2023/03/01 19:29 by boris

Page Tools

Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 4.0 International
CC Attribution-Share Alike 4.0 International Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki