⊿ Point. {R} Glossary. ◢ Keyword: D. ▰ Sources. 〓 Books [B] ◥ University. {q} PhD. ⏫ THEMES. ⏫ Big Data. [B] Big Data. ⚫ USA. ↂ EndNote. ☝️ BD Dummies. Data Federation (federated database system) A federated database system is a type of meta-database management system (DBMS), which transparently maps multiple autonomous database systems into a single federated database. The constituent databases are interconnected via a computer network and may be geographically decentralized. Since the constituent database systems remain autonomous, a federated database system is a contrastable alternative to the (sometimes daunting) task of merging several disparate databases. A federated database, or virtual database, is a composite of all constituent databases in a federated database system.
There is no actual data integration in the constituent disparate databases as a result of data federation. Definition[edit] McLeod and Heimbigner[1] were among the first to define a federated database system in the mid 1980s. Among other surveys,[2] practitioners define a Federated Database as a collection of cooperating component systems which are autonomous and are possibly heterogeneous. Autonomy[edit]