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RTI Database Integration Service - RTI Community - Real
RTI Database Integration Service - RTI Community - Real

... publish-subscribe middleware and relational database management systems (RDBMS). This powerful integration allows your applications to uniformly access data from real-time/embedded and enterprise data sources via RTI Connext™ DDS, or via database interfaces. Since both these technologies are data-ce ...
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... - S-TAP components that are installed on source and target database servers. All local and remote database traffic is recorded with minimal overhead. The recorded data includes SQL statements, order of execution, transaction boundaries, isolation levels, and performance metrics. - InfoSphere Capture ...
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... The isql utility can be used in three modes: as an interactive session; directly from the command line; and as a non-interactive session, using a shell script or batch file. Different tasks may be performed in each of the modes, as illustrated below: • An interactive session can be invoked from the ...
The skyline operator - Data Engineering, 2001. Proceedings. 17th
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... SKYLINE O F clause involves only two dimensions. A twodimensional Skyline can be computed by sorting the data. If the data is topologically sorted according to the two attributes of the SKYLINE O F clause, the test of whether a tuple is part of the Skyline is very cheap: you simply need to compare a ...
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... To update an existing row in a ‘ResultSet’: • Move cursor to valid row of ‘ResultSet’. • Call an ‘updateXXX()’ method on a column. • Call the ‘updateRow()’ method to send the changes to the database. • If ‘auto-commit’ enabled, changes sent to database immediately. • Otherwise, you commit the change ...
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IBM DB2 spatial - EPPS Academic Computing

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... temporary hardware or operating system problem causing the error. If there is no such problem, you must restore the file or switch to a copy. If the ERROR column is NULL and the RECOVER column is YES, then the file requires media recovery (and may also require a restore from backup). Note: Because V ...
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... • SQL/Persistent Stored Modules (PSM) -Defines the rules for developing SQL routines, modules, and functions such as those used by stored procedures and triggers. This is implemented in many major RDBMSs through proprietary, nonportable languages, but for the first time we have a standard for writin ...
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... do not allow candidate translations to include both deletions and insertions on any one relation, as they may be converted into replacements, which we consider sim- ...
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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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