Class Name: Data Quality

Superclass - <SEDRIS Abstract Base>

Subclasses

Definition

An instance of this DRM class specifies a [ISO 19115]-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 Representation> 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

• <<Publishable Object>>

Composed of (two-way)

• zero or one <Lineage> instance (notes)

Component of (two-way)

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

Inherited Field Elements

Field Elements

Notes

Composed of Notes

Lineage

 If provided, this specifies either
 (1) information about the events and/or source data
     used in constructing the data set to which
     given <Data Quality> instance applies, or
 (2) lack of knowledge about lineage.

Fields Notes

fictional

 The value of the fictional field 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.

field_accuracy

 The field_accuracy field specifies a statement of field accuracy.

logical_consistency

 The logical_consistency field specifies an optional statement
 of logical consistency.

completeness

 The completeness field specifies an optional statement of completeness.

abs_horiz_pos_accuracy

 The abs_horiz_pos_accuracy field specifies an optional statement
 that may alternately be expressed
 numerically through the use of
 EAC_ABSOLUTE_HORIZONTAL_ACCURACY.

rel_horiz_pos_accuracy

 The rel_horiz_pos_accuracy field specifies an optional statement
 that may alternately be expressed
 numerically through the use of
 EAC_RELATIVE_HORIZONTAL_ACCURACY.

abs_vert_pos_accuracy

 The abs_vert_pos_accuracy field specifies an optional statement
 that may alternately be expressed
 numerically through the use of
 EAC_ABSOLUTE_VERTICAL_ACCURACY.

rel_vert_pos_accuracy

 The rel_vert_pos_accuracy field specifies an optional statement
 that may alternately be expressed
 numerically through the use of
 EAC_RELATIVE_VERTICAL_ACCURACY.