Entity material_class

• A classification of material based on specification of a range of characteristics. For example, the classification of rocks into lithologic classes is based on ranges of mineral composition and grain size. Other examples of material class is to classify a fluid system as a crude oil, natural gas or formation water.

Attribute                                 Flags   Data Type

From classification_class:
   source_reference                       I       ref_source_reference

                                          The reference used by source to provide the standard
                                          instance, such as Petroleum Industry Data Dictionary
                                          (PIDD), Websters Ninth New Collegiate Dictionary,
                                          etc. 

   source                                 MI      ref_source

                                          The provider of this instance of reference information.
                                          If this instance is provided by POSC, then this
                                          attribute must be "POSC". 

   guideline_or_privilege                 IV      set[0 .. N] of (guideline_or_privilege)

                                          These are the guidelines, limitations, regulations
                                          and privileges that are defined with respect to
                                          this class or typical. This relationship defines
                                          the guidelines, etc., that apply to the objects
                                          or activities to which this instance is assigned.

   data_collection                        IV      set[0 .. N] of (data_collection)

                                          Indicates the data collections that include this
                                          instance of E and P data. 

   graphical_element                      IV      set[0 .. N] of (graphical_element)

                                          Specifies one or more graphical elements which
                                          are depicting this data item. 

   datum_for_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being used as a basis
                                          for comparison with another object. 

   object_of_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being classified in
                                          a rank order based on its characteristics. 

   description                            I       ndt_comment

                                          The description of this class, describing the
                                          criteria for exclusion and inclusion. 

   end_date                               IN      ndt_date

                                          The expiration of the class, after which the class
                                          is invalid. 

   name                                   MI      ndt_name

                                          The name given to the class. 

   start_date                             IN      ndt_date

                                          The date from which this class is valid. 

   classification_system                  I       classification_system

                                          The classification system with which this class
                                          is identified. 

   pty_equipment_facility                 IV      set[0 .. N] of (pty_equipment_facility)

                                          The properties describing ranges of characteristics
                                          for valid members of the class. 


higher_ranking_class                              set[0 .. N] of (material_class)

                                          Indicates various material classes which are ranked
                                          higher in value with respect to the property domain
                                          of the rank. 

classified                                V       set[0 .. N] of (material_class_classification)

                                          Indicates the application of a classification
                                          of this class, such as the grouping of a set of
                                          particular classes to a general class. 

material_class_classification             V       set[0 .. N] of (material_class_classification)

                                          classifies Indicates the use of this class as
                                          a member of a general class. 

material_classification                   V       set[0 .. N] of (material_classification)

                                          Indicates an application of the material class
                                          to a material. 

lower_ranking_class                       V       set[0 .. N] of (material_class)

                                          Indicates various material classes which are ranked
                                          lower in value with respect to the property domain
                                          of rank. 

End of entity material_class

M - mandatory, U - unique, I - inherited, V - inverse, N - named type