SECOND ADMINISTRATIVE LEVEL BOUNDARIES DATA SPECIFICATIONS Version 2.0 Produced on June 2021 by:
[email protected] SALB programme
[email protected] Revision history Revision Revision date Comment Version 1.0 01 July 2017 Version 1.1 01 July 2018 Version 2.0 01 June 2021 2 TABLE OF CONTENTS TERMINOLOGY 5 ACRONYMS 6 INTRODUCTION 7 DISCLAIMER AND TERMS 7 SECTION 1- GENERAL CHARACTERISTICS 7 1.1 DEFINITIONS AND ROLE 7 1.2 HIERARCHY TERMINOLOGY 8 1.3 NAMES 8 1.4 DATA SOURCE 9 1.5 COUNTRIES CODES 9 1.6 DATE FORMAT 9 SECTION 2 - CODING SYSTEM 9 2.1 OVERVIEW 9 2.2 CODING THE INITIAL LIST OF ADMINISTRATIVE UNITS AS OF JANUARY 2000 10 2.2.1 CODING THE FIRST SUBNATIONAL LEVEL 10 2.2.2 CODING THE SECOND SUBNATIONAL LEVEL 11 2.2.3 CODING UNITS PRESENTING THE SAME GEOGRAPHIC EXTENT AT THE 1st AND 2nd SUBNATIONAL LEVEL 12 2.2.4 CODING AREAS WITHOUT ADMINISTRATION 12 2.2.5 CODING AREAS UNDER NATIONAL ADMINISTRATION 13 2.2.6 CODING SECOND SUBNATIONAL LEVEL UNITS LOCATED ACROSS DIFFERENT FIRST LEVEL UNITS 13 2.3 CODING OF HISTORICAL CHANGES 15 2.3.1 SPLITING OR MERGING ADMINSTRATIVE UNIT 15 2.3.2 RENAMING ADMINISTRATIVE UNITS 17 2.3.3 ADDING A NEW ADMINISTRATIVE LEVEL IN THE ADMINISTRATIVE STRUCTURE17 2.3.4 CHANGING THE ADMINISTRATIVE UNIT TYPE FOR A GIVEN ADMINISTRATIVE LEVEL 18 2.3.5 REMOVING AN ADMINISTRATIVE LEVEL 19 2.3.6 RE-INTRODUCING AN ADMINISTRATIVE LEVEL 20 2.3.7 TERRITORIES WITH SPECIAL STATUS 21 3 SECTION 3 – HISTORICAL TABLES 22 3.1 OVERVIEW 22 3.2 CONTENT 22 3.3 FORMAT AND LAYOUT 23 SECTION 4 - GEOSPATIAL DATA 24 4.1 OVERVIEW 24 4.2 GEOMETRY TYPE