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Glossary - Pg. 415

Glossary access control list (ACL). The list of principals that have explicit permission (to publish, to subscribe to, and to request persistent delivery of a publication message) against a topic in the topic tree. The ACLs define the implementation of topic-based security. analytic. An application or capability that performs some analysis on a set of data. application programming interface. An interface provided by a software product that enables programs to request services. asynchronous messaging. A method of communication between programs in which a program places a message on a message queue, then proceeds with its own processing without waiting for a reply to its message. computer. A device that accepts information (in the form of digitalized data) and manipulates it for some result based on a program or sequence of instructions about how the data is to be processed. configuration. The collection of brokers, their execution groups, the message flows and sets that are assigned to them, and the topics and associated access control specifications. data mining. A mode of data analysis that focuses on the discovery of new information, such as unknown facts, data relationships, or data patterns. deploy. Make operational the configuration and topology of the broker domain. engine. A program that performs a core or essential function for other programs. A database engine performs database functions on behalf of the database user programs. instance. A particular realization of a computer process. Relative to database, the realization of a complete database environment. metadata. Typically called data (or information) about data. It describes or defines data elements. multitasking. Operating system capability that allows multiple tasks to run concurrently, taking turns using the resources of the computer. multithreading. Operating system capability that enables multiple concurrent users to use the same program. This reduces the impact of initiating the program multiple times. optimization. The capability to enable a process to execute and perform in such a way as to maximize performance, minimize resource utilization, and minimize the process execution response time delivered to the user. pool. Set of hosts used on colocation and exlocation constraints. process. An instance of a program running in a computer. program. A specific set of ordered operations for a computer to perform. roll-up. Iterative analysis, exploring facts at a higher level of summarization. sample. A sample is an SPL application that is made available with the product. It may be part of the product, or made available with a toolkit. A sample is usually simple, and meant to illustrate a single feature or functionality. © Copyright IBM Corp. 2011. All rights reserved. 415