Definition
AMOSQL [1] is a functional language having its roots in the functional query languages OSQL [2] and DAPLEX [3] with extensions of mediation primitives, multi-directional foreign functions, late binding, active rules, etc. Queries are specified using the select-from-where construct as in SQL. Furthermore, AMOSQL has aggregation operators, nested subqueries, disjunctive queries, quantifiers, and is relationally complete.
AMOSQL is a functional query language operating within the environment of Amos II, which is an open, light-weight, and extensible database management system (DBMS) with a functional data model. Each Amos II server contains all the traditional database facilities, such as a storage manager, a recovery manager, a transaction manager, and a query language. The system can be used as a single-user database or as a multi-user server to applications and to other Amos II peers. It has mainly been used for experiments with Mediators [4].
Key Points
AMOSQL is often used...
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Fahl G, Risch T, Sköld M. 1AMOS – an architecture for active mediators. In: Proceedings of the Workshop on Next Generation Information Technologies and Systems; 1993.
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Risch T, Josifovski V, Katchaounov T. Chapter 9, Functional data integration in a distributed mediator system. In: Gray PMD, Kerschberg L, King PJH, Poulovassilis A, editors. The functional approach to data management. Berlin/Heidelberg/New York: Springer; 2004.
Josifovski V, Risch T. Functional query optimization over object-oriented views for data integration. J Intell Inf Syst. 1999;12(2–3):165–90.
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Gray, P.M.D. (2018). AMOSQL. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_1111
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