The full WDB-II is a digitial map data base produced by the Central Intelligence Agency (CIA) and distributed by the National Technical Information Service (NTIS), U.S. Department of Commerce, 5285 Port Royal Road, Springfield, VA, 22161. Micro WDB-II is a highly compressed version which is suitable for use on micro computers and was put in this configuration by Micro Doc. Before describing Micro WDB-II a few words should be said about the source file - WDB-II. The following paragraphs are paraphrased from the NTIS overview of WDB-II. WDB-II is a digitial representation of the world coastlines and boundries suitable for use in automated mapping systems. It contains approximately six million discrete geographic points and was digitized using all available sources of information. Map scales used range from 1:750,000 to 1:4,000,000 with a nominal scale of 1:3,000,000. These points are grouped by and identified as describing (1) coast lines, (2) country boundries, (3) state boundries (USA only), (4) islands, (5) lakes, and (6) rivers. Each of these groupings is further broken down into features and subordinate classifications/ranks. These ranks are hierarchically structured, and are also used for plotting symbol definition. WDB-II, as provided by NTIS, is in a 20 character format on five 9 track EBCDIC one-half inch magnetic tapes. This data base consists of two types of records, one for the line segment identifier data, and the other for the latitude and longitude values of each discrete point making up the line segment. In this format latitude and longitude values are recorded only as integers in degrees, minutes, and seconds. WDB-II is available for $660.00 (Order Number PB-271 874 SET/HBG).
