overbearing
发表于 2025-3-26 21:50:49
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拖债
发表于 2025-3-27 01:40:40
Object views and database restructuring, operators, namely . and ., that specify both the virtual sclaetna and its corresponding virtual instance. This simple algebra call express most of the view operators proposed in the literature a ad provides a real restructuring of the source schema and instance.
ethnology
发表于 2025-3-27 08:28:21
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anachronistic
发表于 2025-3-27 11:11:28
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browbeat
发表于 2025-3-27 16:47:13
Integrating organisational and transactional aspects of cooperative activities,nal aspects of cooperative activities, based on the CoACT cooperative transaction model. The novelty of the language lies in its ability to deal with a broad spectrum of cooperative applications, ranging from cooperative document authoring to workflow applications.
finale
发表于 2025-3-27 21:03:53
S. Rajaraajeswari,R. Selvarani,Pethuru Rajr seminal paper of 1990. In this area, databases and query languages are defined using read polynomial constraints. As a consequence of a classical result by Tarski, first-order queries in the constraint database model are effectively computable, and their result is within the constraint model..In p
babble
发表于 2025-3-28 00:46:57
https://doi.org/10.1007/978-3-319-59725-6ect-oriented framework, with spatial data represented using linear constraints over a dense domain. The query language is the standard OQL, with special functions for constraint solving and geometric operations..A simple geographical application from the French Institute for Geography, IGN, is runni
ANN
发表于 2025-3-28 03:12:33
Burkhard Schnepel,Edward A. Alpers a hierarchy of monotonicity classes of spatial transformations that is determined by the number of degrees of freedom of the transformations. The result of a monotonic transformation with .degrees of freedom on a spatial database is completely determined by its result on subsets of casdinality at m
充满装饰
发表于 2025-3-28 08:55:41
Burkhard Schnepel,Edward A. Alpershes to the covariance/contravariance problem. While the existing object-oriented type systems are based on subtyping, F-bounded polymorphism and matching, this language system is based entirely on inheritance, which is identified with matching. The type of matching used in this paper relies on the t
格言
发表于 2025-3-28 11:56:55
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