Materials

The materials schema contains information regarding the materials that are used within components. These maybe created from:

• a single base material
• a combination of base materials
• other materials
• a combination of base materials and materials

Table

Column	Status	Format	Notes
identifier	mandatory	UUID	The globally unique identifier for the created material unique identifier. See identifiers section for information on how to construct this identifier
name	mandatory	String	The name of the material this row relates to. e.g. felt or demin or polyester
description	optional	String	A brief description of this material.
externalIdentifiers	optional	Dictionary	A dictionary of identifiers that is used to identify the material in other data standards, software systems or protocols. For example: manufacturer’s own primary key, bar codes or global trade item number (gtin). To provide external identifiers follow this format. {'externalIdentifierName1': 'identifier1', 'externalIdentifierName2': 'identifier2'}. The entries could be drawn from the External Identifiers Controlled List.
constituentIdentifiers	mandatory	List	The information regarding the constituents that are combined to create this material. The entries should be from the Material Constituents List identifier.
combinationPurpose	optional	String	Why is this material being used? Use the identifier of the function that this row relates to. The entry here should be drawn from the Functions Controlled List.
measurements	optional	List	The information regarding the measurements of the material. The entries should be from the Measurements Relationship List.
certification	optional	Boolean	Does the material have a certificate (e.g. FSC, REACH, FSA etc.)? Answer as: TRUE for yes and FALSE for no.
certificationClaims	optional	List	The information regarding the certification. The entries should be the Certification Claims Relationship List identifiers.
manufacturers	optional	List	The information regarding the manufacturer(s). The entries should be the Organisations Relationship List identifiers.
manufacturedCountry	optional	String	The country the component was manufactured in. Use the country numeric ISO codes as described in the ISO 3166 international standard.
updateDate	mandatory	Date	The date that the material was provided/last updated. Use the format yyyy-mm-dd adhering to the ISO 8601 dateTime standard.
releaseDate	optional	Date	The date that the material was first listed for purchase. Use the format yyyy-mm-dd adhering to the ISO 8601 dateTime standard.
discontinueDate	optional	Date	The date that the material was delisted, meaning it was no longer available for purchase. Use the format yyyy-mm-dd adhering to the ISO 8601 dateTime standard.

Diagram

erDiagram
BASE_MATERIALS }o--o{ MATERIALS : material_constituents
  MATERIALS {
    identifier UUID "*"
    name String "*"
    description String
    externalIdentifiers Dictionary
    materialConstituents List "*"
    combinationPurpose String
    measurements List
    certification Boolean
    certificationClaims List
    manufacturers List
    manufacturedCountry String
    updateDate Date "*"
  }
  MATERIALS }o..o{ CONTROLLED_LISTS : attributes
  MATERIALS }o--o{ COMPONENTS : component_constituents
  MATERIALS }o..o{ RELATIONSHIP_LISTS : attributes
        CONTROLLED_LISTS {
    functions optional
    }
        RELATIONSHIP_LISTS {
    certificationClaims optional
    organisations optional
    measurements optional
      }

Guide for how to take measurements

Units

All measurements should be given using the metric system.

• Weight: grams (g)
• Area Density: grams per square metre (gsm) or square metres per kilogram (m^2/kg)

Numbers should be entered with a decimal place. Use the decimal / full stop / period character as a separator. Do not exceed 3 decimal places. When rounding, use convential rounding methods: for 5 and above round up, 4 and below round down. For example: volume = 0.67952 rounded to 0.68.

Important: When converting between systems of measurement, perform the conversion first and then apply the convential rounding. This will give more accuracy and consistency.