| Name | R_Stratigraphic_Rank |
|---|---|
| Entity Type | Table |
| Description | The layer position in the stratigraphic hierarchy. A standard example from the Code of Stratigraphic Nomenclature is Group, Formation, Member, and Bed as the units for Lithostratigraphic layers. |
| Submodel | Geology |
| Entity Scope | Reference |
| Primary Key | Code |
| Natural Key | Code |
| Generalizations | Reference_Entity , Reference_Entity_Parent |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Active_Flag | boolean | NA |
1 = use without restriction. 0 = avoid use - the value has been deprecated and may be removed in a later release. | Yes 1 |
NUMBER(1) |
| Code | CODE | NA |
A standard abbreviation, mnemonic, or short code that represents the reference value. | Yes |
VARCHAR2(64) |
| Description | STRING2000 | NA |
A textual definition of the reference value. | No |
VARCHAR2(2000) |
| Insert_Date | DATE | NA |
Date the entity was created in the repository | No |
DATE |
| Insert_User | STRING64 | NA |
The name of the user responsible for the creation of this entity in the repository. | No |
VARCHAR2(64) |
| Name | STRING255 | NA |
The spelled-out name of the reference value. | No |
VARCHAR2(255) |
| Parent_Unit | R_Stratigraphic_Rank |
|
The parent category in the classification hierarchy that contains this unit. | No |
VARCHAR2(64) |
| Source | CODE | NA |
The person, company or application that defined or specified the data (content) for this instance and is considered to be responsible for it. For example, POSC, EPSG, API, ISO, etc.. | No |
VARCHAR2(64) |
| Topic_Area | CODE | NA |
The base characteristics for defining the membership in this classification. Examples include Lithostratigraphy, Sequence Stratigraphy, Chronostratigraphy, and Biostratigraphy. | No |
VARCHAR2(64) |
| Update_Date | DATE | NA |
Date of the most-recent modification to the entity. | No |
DATE |
| Update_User | STRING64 | NA |
The name of the user responsible for the last modification to this entity. | No |
VARCHAR2(64) |
| From Entity | Link | Description | Implementation Technique | Required |
|---|---|---|---|---|
| R_Stratigraphic_Rank | Parent_Unit | The parent category in the classification hierarchy that contains this unit. | Restrict | No |
| Stratigraphic_Layer | Strat_Layer_Unit | The unit or rank of the stratigraphic horizon in the stratigraphic hierarchy. For example Group, Formation, Member or Bed for Lithostratigraphy; Assemblage Zone, Range Zone or Concurrent Range Zone for Biostratigraphy and System, Series or Stage for Chronostratigraphy. | Restrict | No |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Parent_Unit | R_Stratigraphic_Rank | The parent category in the classification hierarchy that contains this unit. | Restrict | No |