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MID files are part of the data format used by MapInfo (Map Information), a GIS software. MapInfo is a software used to process geographic information and is widely used in commercial GIS, urban planning, geographic analysis and other fields. MID files are used in conjunction with corresponding MIF (MapInfo Interchange Format) files to store attribute information of GIS data.

SDE (Spatial Database Engine) is a software component used to manage and store geospatial data. SDE is a technology developed by Esri that is used to interact with geographic database systems and provide efficient management, query, and editing of spatial data.

PIX (PCI Geomatics Database File) is a file format used to store and process image and raster data. The PIX format is often used to process remote sensing data, such as satellite images, digital elevation models, and meteorological data. It is a binary format that can store multi-channel, multi-resolution data, supports image compression, and can store metadata and geospatial information.

WL files usually stand for Workspace Files, which play an important role in saving and managing geographic data and related settings in MapGIS. They help users maintain the consistency of their work status and provide convenient data access and analysis functions.

ASC (American Standard Code for Information Interchange) file format is a 3D text format developed by Autodesk for easier exchange of 3D data between various 3D modeling software. ASC files save 3D graphics (containing geometric points and shape information) in ASCII text format and can be opened in any text editor, but to view the 3D graphics, the file must be opened in 3D Studio Max, AutoCAD or other CAD software that supports the ASC format.

IMDF (Indoor Map Data Format) is an indoor mapping data format developed by Apple to provide indoor navigation and location information services. IMDF is based on the GeoJSON data format and can store information such as building structure, floors, facilities, entrances and exits, passages, POIs (points of interest) in a standardized form. This format is widely used in indoor map systems and applications such as Apple Maps, and plays an important role in GIS (Geographic Information System), facility management and smart city projects.

ESRI (Environmental Systems Research Institute) is a leading global provider of geographic information system (GIS) software, headquartered in California, USA. Founded in 1969, the company focuses on providing geospatial data collection, management, analysis and visualization solutions. ESRI’s products are widely used in urban planning, disaster management, environmental monitoring, transportation, agriculture, disaster prevention and other fields, and are widely adopted by government agencies, enterprises and research institutions around the world.

JP2 is the file extension of JPEG 2000, which indicates an image file compressed using the JPEG 2000 compression algorithm. JPEG 2000 is an improvement and extension of the traditional JPEG image compression algorithm, which uses a compression technology based on wavelet transform. This format plays an important role in digital image processing, providing an efficient and reliable way to store and transmit image data.

The full name of STEP is Standard for the Exchange of Product Model Data. It is an international standard 3D CAD data exchange format. The standard number is IS10303. STEP file is an internationally used 3D model data exchange format. The extension is usually step or .stp. It can share data between different CAD software, which is very convenient.

GDB file refers to the storage format of File Geodatabase, which is developed by Esri and used in its ArcGIS platform. It is one of the common spatial data management formats in the current Geographic Information System (GIS). File Geodatabase provides an efficient way to store, manage and query various spatial data. Unlike traditional single file storage, GDB file is a folder structure containing multiple files, which can store vector data, raster data and non-spatial table data.