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SQL Server 2000 В принципе, если посмотреть на эту таблицу, то можно заметить, что в ней также перечислены встроенные типы данных. То есть и типы данных, выглядящие встроенными, на уровне конкретной базы данных являются пользовательскими, но имеющими те же свойства и имена, что и встроенные. Например, выберем из таблицы sys ypes базы данных pubs список доступных типов данных: SELEC ame FROM sys ypes Будет возвращен следующий результат: ame image ex u iqueide ifier i yi smalli i smallda e ime real mo ey da e ime floa sql varia ex bi decimal umeric small mo ey bigi varbi ary varchar bi ary char imes amp varchar char sys ame id id empid (29 row(s) affec ed) Как видно, в одной таблице перечислены и встроенные, и пользовательские типы данных (i d, i d и emi d). Управление правилами Правила (rules) являются одним из средств обеспечения целостности данных, хранящихся в базе. Правила оставлены для обеспечения обратной совместимости с предыдущими версиями SQL Server. В новой версии они заменены ограничениями целостности CHECK, которые являются более мощным средством и определяются при создании таблицы. Правила же создаются как отдельные объекты, которые впоследствии связываются с конкретными полями таблиц. | |
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 Human-like Object Perception and Scene Modeling for Intelligent Service Robots Multimodal Object Attention System for CognitiveRobots that are used to support humans in dangerous environments, e. g. , in manufacture facilities are established for decades. Книга по Требованию 2783 руб |  Calculus of Communicating SystemsAccording to Milner, "There is nothing canonical about the choice of the basic combinators, even though they were chosen with great attention to economy. What characterises our calculus is not the exact choice of combinators, but rather the Lambert M. S. Книга по Требованию 1314 руб |
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 Autonomous Wireless Sensor Actuator Network in Logistic Systems. Development and EvaluationThen characteristic for autonomous system are considered. Amir J. Книга по Требованию 2361 руб |  Business Models for Traffic Management System. Business model analysis for traffic system based on mobile communicationThe economic feasibility of the business model is the most important criteria for the implementation decision and success of this technical concept. Книга по Требованию 2007 руб |
 Efficient Security for Mobile Communication Utilizing Elliptic Curves. Hardware/Software Co-Design of Public-Key Cryptography for SSL Protocol Execution inIn recent years, more and more security-sensitive activities like shopping or banking transactions are carried out over the Internet, an inherently insecure medium. Книга по Требованию 2007 руб |  Motion and Sensing in Electrosensory Systems. Investigating Sensor-Based Control in Electrosensory-Endowed Fish andIn the artificial realm, an electrosensory robot capable of actively locating underwater targets by measuring perturbations in a self-generated electric field was built. James S. Книга по Требованию 3233 руб |
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