NGDF Discovery Metadata Guidelines version 1.2

NGDF Discovery Metadata Guidelines version 1.2

Contents

About This Document *

1. Introduction *

1.1 Purpose of Guidelines *

1.2 About this document *

1.3 The National Geospatial Data Framework *

1.4 Metadata *

1.5 Comments on these Guidelines *

1.6 Glossary of Terms & Abbreviations *

1.7 References *

2. Scope and Application of the Guidelines *

3. Discovery Metadata Overview *

3.1 Relationship to Draft ISO Standard 15046-15 *

3.2 Metadata Characteristics *

3.3 Discovery Metadata Elements *

4. Preparing Discovery Metadata *

4.1 Title *

4.2 Alternative Title *

4.3 Originator *

4.4 Abstract *

4.5 Data Capture Period *

4.6 Status of Start Date of Capture *

4.7 Start Date of Capture *

4.8 Status of End Date of Capture *

4.9 End Date of Capture *

4.10 Frequency of Update *

4.11 Presentation Type *

4.12 Access Constraints *

4.13 Use Constraints *

4.14 Keywords *

4.15 Geographic Extent *

4.16 Spatial Referencing by Coordinates *

4.17 System of Spatial Referencing by Coordinates *

4.18 Bounding Rectangle *

4.19 West Bounding Coordinate *

4.20 East Bounding Coordinate *

4.21 North Bounding Coordinate *

4.22 South Bounding Coordinate *

4.23 Spatial Referencing by Geographic Identifiers *

4.24 National Extent *

4.25 Administrative Area Extent *

4.26 Postcode District Extent *

4.27 Spatial Reference System *

4.28 Level of Spatial Detail *

4.29 Supply Media *

4.30 Data Format *

4.31 Additional Information Source *

4.32 Dataset Association *

4.33 Supplier *

4.34 Contact Name or Title *

4.35 Full Postal Address of Supplier *

4.36 Postcode of Supplier *

4.37 Telephone Number of Supplier *

4.38 Facsimile Number of Supplier *

4.39 Email Address of Supplier *

4.40 Web address of Supplier *

4.41 Date of Update of Metadata *

4.42 Sample *

5. NGDF METADATA Transfer Format *

5.1 Introduction *

5.2 The Purpose of a Transfer Format *

5.3 Additional Resources *

5.4 XML Document Type Definition *

5.5 Defining Metadata Elements in the DTD *

5.6 Specifying the XML Version *

5.7 Referencing the NGDF Metadata DTDs *

5.8 An Example of XML Encoding *

5.9 Specifying Controlled Attributes *

5.10 Entity Declarations *

5.11 DTD for NGDF Discovery Metadata *

6. NGDF Communications Protocol *

6.1 Introduction *

6.2 Use of Z39.50 *

6.3 How it works *

6.4 Z39.50 Terminology *

6.5 The Geospatial Profile *

6.6 The ‘NGDF Profile’ – A subset of GEO *

6.7 NGDF Discovery Metadata mapped to GEO *

7. CONFORMANCE *

7.1 Conformance Requirements *

7.2 Conformance *

7.3 Abstract Tests *

7.4 Compatibility of Data Transfer Format *

7.5 Compatibility of Z39.50 Protocol *

APPENDIX A - Worked Examples *

APPENDIX B - UML Class Diagram *

APPENDIX C - Mapping to Dublin Core *

APPENDIX D - Mapping To XML *

APPENDIX E - XML Example *

APPENDIX F - Abbreviated Field Names *

APPENDIX G - NGDF Website *