GIS的英文翻譯中文

Typically, what makes a database spatial isthe connection of the data to geographically referenced coordinate system. A geographicalcoordinate system precisely locates referenced on the earth in terms of an Xand Y coordinate position. Latitude and longitude are the most frequently usedreference coordinates. Both... 顯示更多 Typically, what makes a database spatial isthe connection of the data to geographically referenced coordinate system. A geographicalcoordinate system precisely locates referenced on the earth in terms of an Xand Y coordinate position. Latitude and longitude are the most frequently usedreference coordinates. Both are measured as angles from the center of the earthas a point to a point on the surface of the earth. Many GIS databases aregeographically referenced with transformed coordinates form a different map projectionand associated coordinates system and are typically referred to as X and Ycoordinates. Commercially available Data Base ManagementSystems (DBMSs)have, directly or through extensions, implemented support for thesespatial data. Three examples of this are the Oracle Database 9. X Server withOracle Spatial 9. X spatial database; Informix’s spatial data-blades including2D, 3D, and Geodetic; and ESRI’s Spatial Data Engine (SDE). However, it ispossible to store spatial data in a traditional DBMS, especially given thatspatial data are often readily stored in most database(e,g., addressinformation).It is also possible to store other spatial data(e.g., base maps,overlays)in traditional DBMS;s. This can be accomplished using Binary Large Object(BLOB),which is a collection of bits that can contain anything(e.g., video, text,music, raster data, vector data, and any digital data). Moreover, a BLOB canstore shape file (.SHP)in a record. The shape file has become an industrystandard for storing some types of spatial data.
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