منابع مشابه
Queries on Databases With User-Defined Functions
The notion of a database query is generalized for databases with user-defined functions. Then, we can prove that the computable queries coincide with those expressible by an extension of the relational machine, with oracles ([4]). This implies that any complete query language, extended with user-defined function symbols in a "reasonable" way, is still complete. We give an example of a complete ...
متن کاملSupporting User-Defined Functions on Uncertain Data
Uncertain data management has become crucial in many sensing and scientific applications. As user-defined functions (UDFs) become widely used in these applications, an important task is to capture result uncertainty for queries that evaluate UDFs on uncertain data. In this work, we provide a general framework for supporting UDFs on uncertain data. Specifically, we propose a learning approach ba...
متن کاملOn Generating Permutations Under User-Defined Constraints
In this paper, a method to generate permutations of a string under a set of constraints decided by the user is presented. The required permutations are generated without generating all the permutations. Keywords— Permutations; Algorithm; Matrices; Constraints; Determinants Full Text: http://www.ijcsmc.com/docs/papers/February2014/V3I2201414.pdf
متن کاملUser-defined Texture Synthesis
Synthesis of textures is a very popular and active area of research; the applications and the areas of interest are various and significant. In the last years, much work has been done in order to optimize the synthesis process, speeding up the methods and minimizing the processing errors. Recent efforts in this area are concentrated in producing flexible algorithms and in introducing tools, whi...
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ژورنال
عنوان ژورنال: IEICE Transactions on Information and Systems
سال: 2009
ISSN: 0916-8532,1745-1361
DOI: 10.1587/transinf.e92.d.1401