| V. Bussche and J.Paredaens. The Expressive Power of Structured Values in Pure OODB's. In Proc. 10th ACM SIGACT-SIGMOD-SIGART Symp. on Princ. Database Systems, 1991, pp. 291--299. |
....2, 32, 35] also called value based models) extend the relational model by allowing, besides flat relations, complex object types obtained as a sequence of type constructions, such as tuple, finite) set, finite) list, array, and pointer formation. On the other hand, function based object models [14, 21, 28, 47] view a database as a graph of objects organized in classes, where the links between objects express single valued and multi valued functions (relationships) between objects. In the area of query languages for complex object databases, researchers have successfully extended the well known ....
V. Bussche and J.Paredaens. The Expressive Power of Structured Values in Pure OODB's. In Proc. 10th ACM SIGACT-SIGMOD-SIGART Symp. on Princ. Database Systems, 1991, pp. 291--299.
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