منابع مشابه
Contención de consultas con valores nulos usando el método CQC
Resumen. Este artículo presenta una extensión de nuestro método CQC destinada a comprobar la contención de dos consultas en el contexto de una BD relacional que puede contener valores nulos en los atributos de sus tuplas. Teniendo en cuenta que todos los SGBDs admiten el uso de valores nulos y que las bases de datos “reales” contienen valores nulos, comprobar la contención de consultas en este ...
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El Pilar is a major Maya archeological site with components located on either side of the Belize-Guatemala frontier. This site presents an opportunity to explore the concept of "multiple use" of the natural resources of the greater Maya Forest in ways that have not yet been attempted. Success in such an endeavor would provide benefits to Mexico, Guatemala and Belize that envelop, countries with...
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Multiagent systems allow the problem solution through the decomposition of it into sub problems; each of them can be solved through one or a group of particular agents. For optimizing the execution time of the tasks within a multi agent system MAS – it is needed the presence of special characteristics, such as: the division of the problem into sub problems with similar execution time; and a tas...
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Abstraction and Refinement techniques applied to Object Oriented Conceptual Models, allows Software Engineers debugging stakeholders’ requirements, getting optimal and valid products that guarantee the information consistency at the development stage. In this paper, we propose a method that provides refinement rules, expressed in a formal language to be used in the transition between analysis a...
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ژورنال
عنوان ژورنال: Revista Boletín Redipe
سال: 2020
ISSN: 2256-1536
DOI: 10.36260/rbr.v9i7.1033