Defines a geometrical relationship between two spatial objects.
instance_s (PK, M: CHAR VARYING(19))
Surrogate key of the table.
instance_create_date (O: TIMESTAMP)
e_and_p_data.instance_create_date
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.
last_updated (O: TIMESTAMP)
e_and_p_data.last_updated
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).
geometrical_relationship.secondary_spatial_object
Indicates a spatial object in the role of secondary agent.
Defines a foreign key to table spatial_object.
description (O: CHAR VARYING(2000))
e_and_p_data.description
A remark or comment about the instance.
transient_association.duration
Defines the duration of the association expressed in any valid units of time. duration_u: Defines the unit of measure. Defines a foreign key to table r_unit_of_measure.
e_and_p_data.instance_creator
This is the person, company or application that created this instance. This identifies the party responsible for loading this instance.
is_current (O: CHAR(1))
transient_association.is_current
When TRUE, this flag indicates that this instance is designated as a current instance. This flag can be used in place of time based attributes or can be used in conjunction with them; however, it should not conflict with them.
last_updated_by (O: CHAR VARYING(80))
e_and_p_data.last_updated_by
This records the person or application making the update to this instance.
geometrical_relationship.maximum_distance
The approximate maximum distance from the secondary object, B, to the primary object, A is max (y in B) [d(y,A)], where d(y,A) is as defined for minimum_distance. This value should not be used for sets that are not disjoint. maximum_distance_u: Defines the unit of measure. Defines a foreign key to table r_unit_of_measure.
geometrical_relationship.minimum_distance
The approximate minimum distance between the primary and the secondary object. Let A be the primary and B the secondary object. Define d(y,A) = min (x in A) d(x,y), for every y in B. The minimum_distance (A,B) = min (y in B) [d(y,A)]. For sets that are not disjoint, this value is zero. minimum_distance_u: Defines the unit of measure. Defines a foreign key to table r_unit_of_measure.
geometrical_relationship.nominal_distance
The nominal distance between the primary and secondary object. nominal_distance_u: Defines the unit of measure. Defines a foreign key to table r_unit_of_measure.
source (O: CHAR VARYING(80))
e_and_p_data.source
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".
transient_association.caused_by
Specifies the activity which establishes this association.
Defines a foreign key to table activity.
r_transient_period (FNK, O: CHAR VARYING(80))
transient_association.ref_transient_period
The type of period over which the property applies, such as day, month, quarter, cumulative, etc.
Defines a foreign key to table r_transient_period.
terminated_by_s (FSK, O: CHAR VARYING(19))
transient_association.terminated_by
Specifies the activity which established the termination of a transient association between two objects.
Defines a foreign key to table activity.