Essays about: "Active Database Systems"
Showing result 16 - 20 of 20 essays containing the words Active Database Systems.
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16. Two Approaches to Event Detection in Active Database Systems
University essay from Institutionen för datavetenskapAbstract : An active database management system can react to predefined events in the database, resulting in performing some appropriate action. ECA-rules are used to capture these predefined events and to express the appropriate action in the active database management system. An event is said to be an atomic occurrence and is either primitive or composite. READ MORE
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17. Real-Time Database Support for Distributed Real-Time Simulations
University essay from Institutionen för datavetenskapAbstract : Simulation is a good way to gain insight into a system, for example during development, without having to run or build the actual system. This is especially true for real-time systems, which often operate in hazardous environments or control critical entities in the 'real' world, making testing of these systems in their real environment unsafe during development. READ MORE
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18. Component Decomposition of Distributed Real-Time Systems
University essay from Institutionen för datavetenskapAbstract : Development of distributed real-time applications, in contrast to best effort applications, traditionally have been a slow process due to the lack of available standards, and the fact that no commercial off the shelf (COTS) distributed object computing (DOC) middleware supporting real-time requirements have been available to use, in order to speed up the development process without sacrificing any quality. Standards and DOC middlewares are now emerging that are addressing key requirements of real-time systems, predictability and efficiency, and therefore, new possibilities such as component decomposition of real-time systems arises. READ MORE
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19. Building Distributed Control Systems Using Distributed Active Real-Time Databases
University essay from Institutionen för datavetenskapAbstract : From the field of control theory, we can see that varying communication delays in a control system may be hard or even impossible to handle. From this point of view it is preferable to have these delays bounded and as small and as possible in order to adapt the control process to them. READ MORE
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20. Improving Testability of Applications in Active Real-Time Database Environments
University essay from Institutionen för datavetenskapAbstract : The test effort required to achieve full test coverage of an event-trigered real-time system is very high. In this dissertation, we investigate a method for reducing this effort by constraining behavior of the system. We focus on system level testing of applications with respect to timeliness. READ MORE
