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What is the terminology SDTS uses for its structures?

April 26, 2017sdts structures Terminology uses

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What is the terminology SDTS uses for its structures?

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An SDTS transfer is a set of modules that are related by the information they contain. A module is composed of records. A record is composed of fields. A field is composed of subfields. The subfields contain the actual data being transferred. The higher level structures convey the meaning and context of the information. All concepts in SDTS are represented with this set of structures: transfer, module, record, field, and subfield. For example, an SDTS Transfer must contain an Identification Module. This module contains records which identify the overall content and origin of the spatial data set. The records contain fields like Identification Field, Conformance Field, and Attribute Field. The Identification Field contains subfields like Standard Version, Profile Identification, Title, Map Date, and Scale. The SDTS Line Module which is for representation of one-dimensional spatial objects has fields for Spatial Addresses, Attributes, Polygon Left/Right, etc.