External Links

    Journal: Data \& Knowledge Engineering

    Volume 17, Issue 1

    1 -- 29Nikos A. Lorentzos, Alexandra Poulovassilis, Carol Small. Manipulation Operations for an Interval-Extended Relational Model
    31 -- 57Sergio Greco, Luigi Palopoli, Eugenio Spadafora. Extending Datalog with Arrays
    59 -- 86Nikos A. Lorentzos, Yannis Manolopoulos. Functional Requirements for Historical and Interval Extensions to the Relational Model
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