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Abstract: We propose an object-oriented data model that generalizes the relational, hierarchical, and network models. A database scheme in this model is a directed graph, whose leaves represent data and whose internal nodes represent connections among the data. Instances are constructed from objects, which have separate names and values. We define a logic for the model, and describe a nonprocedural query language that is based on the logic. We also describe an algebraic query language and show that it is ... (Update)
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...the forest. Observe that this is a rather conventional tree structure. This is a data model in the spirit of the complex value model [22, 1, 14] and many others. It is particularly influenced by models for unstructured data [27, 26] and the tree model of [10] A particularity...
...especially with respect to a limited use of negation. The idea of value invention originated from a proposal by Kuper and Vardi [16] to choose arbitrary symbolic object names to manage new complex object values defined in their logical queries. The first completeness...
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0.3: On the Complexity of Queries in the Logical Data Model - Gabriel Kuper Ibm (1993) (Correct)
0.2: An Overview on Semantical Constraints for Database Models - Thalheim (1996) (Correct)
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BibTeX entry: (Update)
G.M. Kuper and M.Y. Vardi. The logical data model. In Principles of Database Systems, pages 86--96. ACM, 1984. http://citeseer.ist.psu.edu/kuper97logical.html More
@article{ kuper93logical,
author = "Gabriel M. Kuper and Moshe Y. Vardi",
title = "The Logical Data Model",
journal = "ACM Transactions on Database Systems",
volume = "18",
number = "3",
pages = "379--413",
year = "1993",
url = "citeseer.ist.psu.edu/kuper97logical.html" }
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