Fractional analysis ORM diagram

This object-role modeling (ORM) diagram sample shows schema for geologic fractional analysis. It was designed on the base of the Wikimedia Commons file: Schema for Fractional Analysis.gif. [commons.wikimedia.org/wiki/File:Schema_for_Fractional_Analysis.gif] "The Fractional Analysis (Figure 3) concept is used to model any situation in which an entity is composed of other entities in certain proportions. Common examples are chemical analyses, grain size-distributions, and modal mineralogy. Constituent types used in Fractional Analyses are specified in a system classification table. Constituents that are used as fractional parts of a described entity must be allowed as components of a Fractional Analysis of the Described Entity." [pubs.usgs.gov/of/1999/of99-386/richard.html] The object-role model example "Fractional analysis ORM diagram" was designed using ConceptDraw PRO software extended with ORM Diagrams solution from Software Development area of ConceptDraw PRO Solution Park.