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Relational transducers are a theoretical model for studying computer systems through the lens of database relations. This model extends the transducer model in formal language theory. They were first introduced in 1998 by Abiteboul et al for the study of electronic commerce applications.[1] The computation model treats the input and output as sequences of relations. The state of the transducer is a state of a database and transitions through the state machine can be thought of as updates to the database state. The model was inspired by the design of active databases and motivated by a desire to be able to express business applications declaratively via logical formulas.
^Abiteboul, Serge; Vianu, Victor; Fordham, Brad; Yesha, Yelena (2000). "Relational Transducers for Electronic Commerce". Journal of Computer and System Sciences. 61 (2): 236–269. doi:10.1006/jcss.2000.1708.
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