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.
What are the health risks? Exposure to sewage or its products may result in a number of illnesses. These include: â  gastroenteritis, characterised by cramping stomach pains, diarrhoea and vomiting; â  Weilâs disease, a flu-like illness with persistent and severe headache, transmitted by rat urine.he term may be used to mean raw sewage, sewage sludge, or septic tank waste.Raw sewage is mainly water containing excrement, industrial effluent and debris, such as sanitary towels, condoms, plastic etc.