Class Name: Data Quality

Superclass - <SEDRIS Abstract Base>

Subclasses

Definition

An instance of this DRM class provides a [CSDGM]-compliant description of the level of quality of the information contained in the aggregating SEDRIS object.

Primary Page in DRM Diagram:

• 20

Secondary Pages in DRM Diagram:

• 1
• 2
• 3
• 6
• 8
• 19

Example

1. Description of the level of data quality for the <Feature> instances within a particular thematic layer, such as vegetation.

FAQs

How does the data quality of a SEDRIS object depend on the data quality of the sources used in its creation?

Each of the processing steps that is performed in the creation of a SEDRIS object has some effect on the quality of the result, but the individual impacts of the processing steps are not well understood, let alone the combined impacts.

How does the data quality of a <Transmittal Root>, or any other SEDRIS object within a transmittal, depend on the data quality of its components?

The data quality of the whole is certainly no better than the worst of its components.

Constraints

Composed of (two-way metadata)

• one or more <Process> instances
• zero or more <Source> instances

Component of (two-way)

• zero or more <Attribute Set> instances
• zero or more <Data Table> instances
• zero or more <Environment Root> instances
• zero or more <Feature> instances
• zero or more <Feature Model> instances
• zero or more <Geometry Hierarchy> instances
• zero or more <Geometry Model> instances
• zero or more <Model> instances
• zero or one <Transmittal Root> instance

Inherited Field Elements

Field Elements

Notes

Fields Notes

fictional

 This value is SE_TRUE if *any* aspect of the data content
 *intentionally* deviates from the available source data -
 that is, was 'made up' out of thin air; fictional is
 SE_FALSE otherwise.

property_accuracy

 This optional accuracy statement applies, for the scope of
 the given <Data Quality> instance, to <Property Value>
 instances that are attached to <Feature> and <Geometry>
 instances, or are contained in <Property Table> instances.

logical_consistency

 This is an optional statement of logical consistency.

completeness

 This is an optional statement of completeness.

abs_horiz_pos_accuracy

 This optional statement may alternately be expressed
 numerically through the use of
 EAC_ABSOLUTE_HORIZONTAL_ACCURACY.

rel_horiz_pos_accuracy

 This optional statement may alternately be expressed
 numerically through the use of
 EAC_RELATIVE_HORIZONTAL_ACCURACY.

abs_vert_pos_accuracy

 This optional statement may alternately be expressed
 numerically through the use of
 EAC_ABSOLUTE_VERTICAL_ACCURACY.

rel_vert_pos_accuracy

 This optional statement may alternately be expressed
 numerically through the use of
 EAC_RELATIVE_VERTICAL_ACCURACY.