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What is an EPICS database?
What is an EPICS database?

... The DTYP field determines which device support to use The device support selected determines the format of the link (INP or OUT field) containing device address information Adding new device support does not require change to the record software Device support may call other software to do work for ...
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Microsoft Access 2010
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... executing the following step until no more expressions can be found:  for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far  The above approach is very expensive in space and time  Space requirements redu ...
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an Overview of Finegrained Authorization
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... interface for the EJBs. Clients use the home interface to address questions such as how to locate an EJB, how to create an EJB, or how to delete an EJB. For example, a client creates an EJB by using the home interface's create methods. Remember that these are methods that the developer of the EJB pr ...
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Concurrency control

In information technology and computer science, especially in the fields of computer programming, operating systems, multiprocessors, and databases, concurrency control ensures that correct results for concurrent operations are generated, while getting those results as quickly as possible.Computer systems, both software and hardware, consist of modules, or components. Each component is designed to operate correctly, i.e., to obey or to meet certain consistency rules. When components that operate concurrently interact by messaging or by sharing accessed data (in memory or storage), a certain component's consistency may be violated by another component. The general area of concurrency control provides rules, methods, design methodologies, and theories to maintain the consistency of components operating concurrently while interacting, and thus the consistency and correctness of the whole system. Introducing concurrency control into a system means applying operation constraints which typically result in some performance reduction. Operation consistency and correctness should be achieved with as good as possible efficiency, without reducing performance below reasonable levels. Concurrency control can require significant additional complexity and overhead in a concurrent algorithm compared to the simpler sequential algorithm.For example, a failure in concurrency control can result in data corruption from torn read or write operations.
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