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Query language — Query languages are computer languages used to make queries into databases and information systems. Broadly, query languages can be classified according to whether they are database query languages or information retrieval query languages. The… … Wikipedia
Query expansion — (QE) is the process of reformulating a seed query to improve retrieval performance in information retrieval operations. [cite journal last = Vectomova | first = Olga | coauthors = Wang, Ying | year = 2006 title = A study of the effect of term… … Wikipedia
Query by humming — (QbH) is a music retrieval system that branches off the original classification systems of title, artist, composer, and genre. It normally applies to songs or other music with a distinct single theme or melody. The system involves taking a user… … Wikipedia
Query optimizer — The query optimizer is the component of a database management system that attempts to determine the most efficient way to execute a query. The optimizer considers the possible query plans for a given input query, and attempts to determine which… … Wikipedia
Query Throughput — In Computer Science, Query Throughput (QthD) is a measurement used to determine the performance of a database system. The throughput metric is a classical throughput measure characterizing the ability of the system to support a multi user… … Wikipedia
Continuous Query Language — Die Continuous Query Language (CQL) ist eine deklarative Anfragesprache für Datenströme in Data Stream Management Systemen. Sie stellt eine Erweiterung der SQL dar. Die CQL wurde bis Januar 2006 im Rahmen des STREAM Projekts an der Stanford… … Deutsch Wikipedia
information processing — Acquisition, recording, organization, retrieval, display, and dissemination of information. Today the term usually refers to computer based operations. Information processing consists of locating and capturing information, using software to… … Universalium
Online analytical processing — In computing, online analytical processing, or OLAP ( /ˈoʊlæ … Wikipedia
Transaction processing — For other uses, see Transaction (disambiguation). In computer science, transaction processing is information processing that is divided into individual, indivisible operations, called transactions. Each transaction must succeed or fail as a… … Wikipedia
Online transaction processing — Online transaction processing, or OLTP, refers to a class of systems that facilitate and manage transaction oriented applications, typically for data entry and retrieval transaction processing. The term is somewhat ambiguous; some understand a… … Wikipedia
