GOES-16's Geostationary Lightning Mapper (GLM) is the first operational lightning mapper flown in geostationary orbit. The Object Relational Mapper offers automatic synchronization of backend data. SQLAlchemy can be used as data mapper to a relational database. GS Reference Mapper maps short reads to a reference genome, generating a consensus sequence. The port mapper must be started before any other RPC servers are started. In software engineering, the data mapper pattern is an architectural pattern. Flashcache is built on top of the Linux kernel's device mapper. The Moon Mineralogy Mapper on Chandrayaan-1 was a geophysical imaging spectrometer. Landsat 7 uses the Enhanced Thematic Mapper Plus (ETM+) scanner. Therefore, Landsat 5 carried the same instruments, including the Thematic Mapper and Multi-Spectral Scanner. The process of applying that code on the file is known as Mapper. Based on Landsat Thematic Mapper images, it was considered a potentially active volcano in 1991. Without additional mapper hardware, the maximum ROM size is 32kiB/256kib. The port mapper service first appeared in SunOS 2.0.