The file extension or file header of the archive file are indicators of the file format used. Computer archive files are created by file archiver software, optical disc authoring software, and disk image software. Archive formats. An archive format is the file format of an archive file.
Definition of sewage for English Language Learners. : waste material (such as human urine and feces) that is carried away from homes and other buildings in a system of pipes.
Liquid waste from business and industry â also known as trade waste â is considered sewage or wastewater as well. Sewerage on the other hand refers to the system of pipes, pumping stations and treatment facilities that collect and treat sewage.