POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
A location that is expressed as an ordered set of two ordinate values. The related coordinate system must have only two axes.
- point_element (O, K: point_element(pty_location_2d))
- Refers to the graphical element which is positioned by this geometry. Each pty_location_2d may be a property of one point_element.
- vertex (O, K: vertex(pty_location_2d)) (C008)
- Each pty_location_2d may be a property of one vertex.
- activity (O, K, I: activity(process_data))
- Defines the activity which created this instance. Each pty_location_2d may be the result of one activity. Inherited from process_data.
- data_value (M: ndt_location_2d)
- The coordinates of a point in a two dimensional coordinate system.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- instance_create_date (O, I: ndt_date_tod) (C126)
- This is the date that this instance was created. This date is defined by the source if imported, or is the date the instance is created if a new instance. Inherited from e_and_p_data.
- instance_creator (O, I: ndt_identifier) (C126)
- This is the person, company or application that created this instance. This identifies the party responsible for loading this instance. Inherited from e_and_p_data.
- last_updated (O, I: ndt_date_tod) (C126)
- This is the date that this instance was last updated. This value should be updated when any part of this instance is altered (except for inverse relationships). Inherited from e_and_p_data.
- last_updated_by (O, I: ndt_identifier) (C126)
- This records the person or application making the update to this instance. Inherited from e_and_p_data.
- preferred_flag (O, I: ndt_boolean)
- The flag is set to True if this instance of property is the preferred value in this data store of this type of property for the object which this property describes. Inherited from property.
- source (O, I: ndt_identifier) (C126)
- The provider of this instance, which is usually a data provider for imported/purchased data. If this instance is provided by POSC, then this attribute must be "POSC". Inherited from e_and_p_data.
- source_content (O, I: ndt_identifier) (C127)
- This is the original source of the data (e.g., the surveying company). This is the person, company or application that defined or specified the data (content) for this instance and is considered to be responsible for it. This may be the same as or different from the provider of the instance (e.g., POSC). Inherited from pty_location.
- data_collection (I, V: SET[0:?] data_collection_content(collection_part)) (C020)
- Indicates the data collections that include this instance of E and P data. Each pty_location_2d may be a member of one or more data_collection_content. Inherited from e_and_p_data.
- document_information_content (I, V: SET[0:?] document_information_content(e_and_p_data)) (C136)
- These are the document specification parts that include this data value and define its meaning within a document specification. Each use may define a different meaning, and many uses are allowed. Each pty_location_2d may be included in one or more document_information_content. Inherited from e_and_p_data.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each pty_location_2d may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- location_status (O, I: ref_location_status(pty_location)) (C076, C122)
- This indicates the status of a location. Each pty_location_2d may have a status of one ref_location_status. Inherited from pty_location.
- process_data_item (I, V: SET[0:?] process_data_item(process_data))
- Defines where this data was used by an activity. Each pty_location_2d may be the value for one or more process_data_item. Inherited from process_data.
- pty_location_accuracy (I, V: SET[0:?] pty_location_accuracy(pty_location))
- Each pty_location_2d may have a property of one or more pty_location_accuracy. Inherited from pty_location.
- represent (O, I: property(representations)) (C125)
- This is the property that is the original for which this representation is an equivalent representation. Each pty_location_2d may be an equivalent representation of one property. Inherited from property.
- representations (I, V: SET[0:?] property(represent)) (C125)
- This designates other properties that are stated to be equivalent representations of this property representation, such as the same geometry using another coordinate system. Each pty_location_2d may have as equivalent representations one or more property. Inherited from property.
Local rules:
Supertype path(s):
Referenced in Diagrams:
Generated on Tue Jul 10 15:48:44 2001
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