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2. List of GIS data sources - Wikipedia

   en.wikipedia.org/wiki/List_of_GIS_data_sources

   This is a list of GIS data sources (including some geoportals) that provide information sets that can be used in geographic information systems (GIS) and spatial databases for purposes of geospatial analysis and cartographic mapping. This list categorizes the sources of interest.

3. Geodatabase (Esri) - Wikipedia

   en.wikipedia.org/wiki/Geodatabase_(Esri)

   The origin of the geodatabase was in the mid-1990s during the emergence of the first spatial databases.One early approach to integrating relational databases and GIS was the use of server middleware, a third-party program that stores the spatial data in database tables in a custom format, and translates it dynamically into a logical model that can be understood by the client software.

4. GIS file format - Wikipedia

   en.wikipedia.org/wiki/GIS_file_format

   Vector data is more compatible with relational database environments, where they can be part of a relational table as a normal column and processed using a multitude of operators. Vector file sizes are usually smaller than raster data, which can be tens, hundreds or more times larger than vector data (depending on resolution).

5. Geographic data and information - Wikipedia

   en.wikipedia.org/wiki/Geographic_data_and...

   There are also many different types of geodata, including vector files, raster files, geographic databases, web files, and multi-temporal data. Spatial data or spatial information is broader class of data whose geometry is relevant but it is not necessarily georeferenced , such as in computer-aided design (CAD), see geometric modeling .

6. Geographic information system - Wikipedia

   en.wikipedia.org/wiki/Geographic_Information_System

   GIS data acquisition includes several methods for gathering spatial data into a GIS database, which can be grouped into three categories: primary data capture, the direct measurement phenomena in the field (e.g., remote sensing, the global positioning system); secondary data capture, the extraction of information from existing sources that are ...

7. Data model (GIS) - Wikipedia

   en.wikipedia.org/wiki/Data_model_(GIS)

   The georelational data model was the basis for most early vector GIS software. [19] The geometric data and the attribute data are stored separately; this was originally because the geometric data required GIS-specific code to process it, but existing relational database software (RDBMS) could be

8. Shapefile - Wikipedia

   en.wikipedia.org/wiki/Shapefile

   The shapefile format is a geospatial vector data format for geographic information system (GIS) software.It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [1]

9. MapInfo TAB format - Wikipedia

   en.wikipedia.org/wiki/MapInfo_TAB_format

   When MapInfo Professional creates a seamless table it makes a simple vector layer which contains a rectangle for each base data set with attribute data defining the file path to the files containing the base data. When the seamless table is opened, metadata in its *.TAB file causes the map to display not the rectangles but the contents of the ...