Class Name: Cross Reference

Superclass - <SEDRIS Abstract Base>

Subclasses

Definition

An instance of this DRM class specifies a [CSDGM]-compliant reference to an external data set that is related in some way to the containing SEDRIS object to which the <Cross Reference> is attached.

Primary Page in DRM Diagram:

• 20

Secondary Pages in DRM Diagram:

• 1
• 2
• 3
• 6
• 8
• 10
• 14
• 19
• 21
• 22

Example

1. A reference to a SEDRIS transmittal covering the adjacent area to the east.

2. A reference to a small-scale map covering the entire area described by a transmittal.

3. A reference to a Statement of Work containing the requirements used to create a transmittal.

4. A reference to a Product Specification describing the content of one of the types of a <Data Table>.

FAQs

What is the purpose of this class?

This class provides a very general-purpose mechanism that can be used to document almost any type of relationship between an object in a SEDRIS transmittal and an external data set. It uses a <Citation> component to refer to the external data set, so it has the flavor of a bibliographical reference, and can be used to refer to books, maps, presentations, or any other type of 'publication', as well as to digital data sets. Each <Cross Reference> also includes a field in which the nature of the relationship can be described. Note that a <Cross Reference> is similar to a <Source>, but is more general in nature. <Sources> should be used to document the data sources that were used in the creation of a SEDRIS transmittal or one of its major subordinate objects. <Cross References> should be used to refer to the other related materials that may be of interest to the user of a SEDRIS transmittal.

Constraints

Composed of (two-way metadata)

• one <Citation> instance (notes)

Component of (two-way)

• zero or more <Attribute Set> instances
• zero or more <Attribute Set Table> instances
• zero or more <Attribute Set Table Group> instances
• zero or more <Colour Table> instances
• zero or more <Colour Table Group> 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 <Image> instances
• zero or more <Model> instances
• zero or more <Sound> instances
• zero or more <Symbol> instances
• zero or one <Transmittal Root> instance

Inherited Field Elements

Field Elements

Notes

Composed of Notes

Citation

 <Citation<> for the related external data set (Mandatory)

Fields Notes

relationship

 description of how the cited data set is related (Optional)