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This article shows you how to use spatial database in GIS development. The content is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

In the early GIS development, the use of spatial database is relatively small, generally using Arcgis Engine for GIS spatial analysis and other functions of development, or through Spatial Database Engine (sde) spatial data engine to call database data for functional development, open source, gdal also uses more.

With the development of technology, many databases now support spatial data extension, whether relational database or NoSQL database, the common ones are Oracle database space, SQL Server2008 version also adds spatial extension, MySQL has spatial extension, Postgresql specialized extension Postgis, file-based Sqlite can also realize spatial data extension (Spatialite) through various development languages. Mongodb and couchbase in NoSQL can also realize the related operations of spatial data.

Compared with operating spatial data of file types such as shapefile, spatial database has quite good advantages in storage, development and efficiency.

To develop an analysis function of GIS, using spatial data of file type, you need to use the development language to read the data, analyze them one by one, and check the results. In the spatial database, you only need a sql statement to get the results, which may reduce a lot of work in the amount of code, and the database engine is generally optimized. The efficiency of the analysis process will also be greatly improved compared with our own reading, and some spatial databases can also provide some advanced analysis similar to path analysis, which can also improve the efficiency of GIS application development.

In the aspect of data storage and updating, the modification of file data generally needs to be modified through special tools, and updating data is equivalent to modifying the whole file, and the data in the database can also be modified through a few sql statements. Different databases can export the coordinate information of spatial data tables to wkt, wkb and other general formats to facilitate data migration. And wkt, wkb format in all kinds of map engines, there are available api directly parsed into the platform coordinate information.

Data sharing, at present, all kinds of gis publishing software, can support the data connected to the database, share and release, and then through the development of business data services, support BS\ CS client data access.

The above is how to use spatial database in GIS development. Have you learned any knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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