Relational database. A relational database is a digital database whose organization is based on the relational model of data, as proposed by E. F. Codd in 1970. The various software systems used to maintain relational databases are known as a relational database management system (RDBMS).
Gastrointestinal Infections. Viruses cause viral gastroenteritis, commonly called the stomach flu.. This common illness, characterized by diarrhea, nausea and vomiting, is caused by many different viruses, but not the influenza virus.According to a 2012 article in the journal American Family Physician, viruses cause between 75 and 90 percent of acute gastrointestinal disease in children.Rotavirus is the most common viral cause of gastroenteritis among children.astrointestinal Infections. Viruses cause viral gastroenteritis, commonly called the stomach flu.. This common illness, characterized by diarrhea, nausea and vomiting, is caused by many different viruses, but not the influenza virus.
Although viruses are extremely small and simple, they are a major cause of disease. Some viruses infect human beings with such diseases as measles, influenza, and the common cold. Others infect animals or plants, and still others attack bacteria.Viruses produce disease in an organism by damaging some of its cells.However, viruses sometimes live in cells without harming them.ollowing is the table of some of the viruses which are responsible for many common human diseases such as colds, flu, diarrh a, chicken pox, measles, and mumps. Some viral diseases such as rabies, h morrhagic fevers, encephalitis, polio, yellow fever, and acquired immunodeficiency syndrome (AIDS) can result in death.