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.
Other Viral Infections. Viruses are abundant in the world and cause many other infections ranging from mild to life-threatening. 1  Epstein-Barr virus (EBV) is a type of herpes virus thatâs associated with fever, fatigue, swollen lymph nodes, and an enlarged spleen.xamples include: 1  Rhinovirus is the virus that most often causes the common cold, but there are more than 200 different viruses that can cause colds. 2  Cold symptoms like coughing, sneezing, mild headache, and sore throat typically last for up to 2 weeks.