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5.4 Attribute Modules

Refer to 4.1.3.6 and Annex C for a full discussion and examples of the logical encoding of attribute modules.

5.4.1 Attribute Primary Module

The Attribute Primary module defines the primary attributes associated with a spatial element or object. All fields for the module record are nonrepeating and the module is therefore a relational module (see Table 31). The forward link, if present, from the spatial object through the Attribute ID field, must match the Module Name and Record ID of the primary field of the module record for this module. The backward link, if present, is provided through the Spatial Object ID field, and the contents of this field must match the module record identifier of the spatial object. The subfields of the Primary Attributes field are generic, user defined, with the description occurring in the Schema module. The number of attributes is selected by the user, but this number must not vary for a given module in a transfer.

5.4.2 Attribute Secondary Module

The Attribute Secondary module defines the secondary attributes associated with values of primary attributes (see Table 32). The module is also of the relational type. The Catalog/Cross-Reference module must be used to indicate associations between Attribute Primary and Attribute Secondary modules. Further association between attributes in both modules must then be made through common attributes (same name and authority) to be used in relational joins. The Data Dictionary/Schema module can be used to indicate primary and foreign key relationships between attributes in both types of modules.

Table 26 - Lineage module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Lineage (P) [M]						DQHL
	Module Name [M]	A unique module name for a Lineage module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
	Comment [M]	Any comments	A	Gr-chars	Any combination of graphics characters.	COMT
(^)Attribute ID (R)		Foreign identifier for Attribute Primary module record. Attributes or comments as determined by the supplier organization in accordance with 3.1.				ATID
(^)Foreign ID (R)		Reference to a specific module record.				FRID

Table 27 - Positional accuracy module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD D ESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
PositionalAccuracy (P) [M]						DQPA
	Module Name [M]	A unique module name for a Positional Accuracy module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
	Comment [M]	Any comments.	A	Gr-chars	Any combination of graphic characters.	COMT
(^)Attribute ID (R)		Foreign identifier for Attribute Primary module record. Attributes or comments as determined by the supplier organization in accordance with 3.2.				ATID
(^)Foreign ID (R)		Reference to a specific module record.				FRID

Table 28 - Attribute accuracy module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Attribute Accuracy (P) [M]						DQAA
	Module Name [M]	A unique module name for an Attribute Accuracy module.	A	Alphanum	Name must begin with an alphabetic character other than a SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
	Comment [M]	Any comments.	A	Gr-chars	Any combination of graphics characters.	COMT
(^)Attribute ID (R)		Foreign identifier for Attribute Primary module record. Attributes or comments as determined by the supplier organization in accordance with 3.3.				ATID
(^)Foreign ID (R)		Reference to a specific module record.				FRID

Table 29 - Logical consistency module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Logical Consistency (P) [M]						DQLC
	Module Name [M]	A unique module name for a Logical Consistency module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
	Comment [M]	Any comments.	A	Gr-chars	Any combination of graphics characters.	COMT
(^)Attribute ID (R)		Foreign identifier for Attribute Primary module record. Attributes or comments as determined by the supplier organization in accordance with 3.4.				ATID
(^)Foreign ID (R)		Reference to a specific module record.				FRID

Table 30 - Completeness module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Completeness (P) [M]						DQCG
	Module Name [M]	A unique module name for a Completeness module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
	Comment [M]	Any comments.	A	Gr-chars	Any combination of graphics characters.	COMT
(^)Attribute ID (R)		Foreign identifier for Attribute Primary module record. Attributes or comments as determined by the supplier organization in accordance with 3.5.				ATID
(^)Foreign ID (R)		Reference to a specific module record.				FRID

Table 31 - Attribute primary module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Attribute Primary (P) [M]						ATPR
	Module Name [M]	A unique identifier for this Attribute Primary module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
(^)Spatial Object ID (N)		Foreign identifier of spatial object with which the attribute record is associated.				OBID
Primary Attributes (N) [M]	(+)attribute [M]	Primary attributes for an object.	A|I|R S|B|C ^	Alphanum Numeric Bitfield	As indicated by Format in the Data Dictionary/Schema module. Packed foreign identifier (see 4.1.3.6.7)	ATTP

Table 32 - Attribute secondary module specification

FIELD NAME	SUBFIELD NAME	FIELD/SUBFIELD DESCRIPTION	TYPE	DOMAIN	DOMAIN DESCRIPTION	MNEMONIC
Attribute Secondary (P) [M]						ATSC
	Module Name [M]	A unique identifier for this Attribute Secondary module.	A	Alphanum	Name must begin with an alphabetic character other than SPACE.	MODN
	Record ID [M]	A number for the module record, unique within the module.	I	Integer	Unsigned integer; with Module Name must form unique ID within the file set.	RCID
Secondary Attributes (N) [M]	(+)attribute [M]	Secondary attributes associated with primary attribute.	A|I|R S|B|C ^	Alphanum Numeric Bitfield	As indicated by Format in the Data Dictionary/Schema module. Packed foreign identifier (see 4.1.3.6.7)	ATTS