Abstract
ROL is a strongly typed deductive object-oriented database language. It integrates many important features of deductive databases and object-oriented databases. However, it is only a structurally object-oriented language. In this paper, we describe our extension of ROL called ROL2. ROL2 keeps all the important features of ROL. In addition, it incorporates important behaviorally object-oriented features such as rule-based methods and encapsulation so that it is a real deductive object-oriented database language. It supports object identity, complex objects, class hierarchy, methods, non-monotonic multiple structural and behavioral inheritance with overriding and blocking.
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Liu, M., Guo, M. (1998). ROL2: A Real Deductive Object-Oriented Database Language. In: Ling, TW., Ram, S., Li Lee, M. (eds) Conceptual Modeling – ER ’98. ER 1998. Lecture Notes in Computer Science, vol 1507. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49524-6_24
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DOI: https://doi.org/10.1007/978-3-540-49524-6_24
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