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Data retrieval information


Data retrieval means obtaining data from a database management system (DBMS), like for example an object-oriented database (ODBMS). In this case, it is considered that data is represented in a structured way, and there is no ambiguity in data.

In order to retrieve the desired data the user presents a set of criteria by a query. Then the database management system selects the demanded data from the database. The retrieved data may be stored in a file, printed, or viewed on the screen.

A query language, like for example Structured Query Language (SQL), is used to prepare the queries. SQL is an American National Standards Institute (ANSI) standardized query language developed specifically to write database queries. Each database management system may have its own language, but most are relational.[clarification needed]

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Data retrieval

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Data retrieval means obtaining data from a database management system (DBMS), like for example an object-oriented database (ODBMS). In this case, it is...

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Information retrieval

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for the metadata that describes data, and for databases of texts, images or sounds. Automated information retrieval systems are used to reduce what has...

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Data structure

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commonly use B-tree indexes for data retrieval, while compiler implementations usually use hash tables to look up identifiers. Data structures provide a means...

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Microsoft SQL Server

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to allow fast retrieval of rows, the rows are stored in-order according to their index values, with a B-tree providing the index. The data is in the leaf...

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Retrieval

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up retrieval in Wiktionary, the free dictionary. Retrieval may refer to: RETRIEVE, Tymshare database that inspired dBASE and others Data retrieval Document...

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DNP3

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Integrity Poll, only significant data changes are sent. This can result in significantly more responsive data retrieval than polling everything, all the...

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Retrieval Data Structure

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In computer science, a retrieval data structure, also known as static function, is a space-efficient dictionary-like data type composed of a collection...

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Data extraction

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information Data mining, discovery of patterns in large data sets using statistics, database knowledge or machine learning Data retrieval, obtaining data from...

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Database

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that define the organization of the data. Update – Insertion, modification, and deletion of the actual data. Retrieval – Providing information in a form...

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GPS animal tracking

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optional environmental sensors or automated data-retrieval technologies such as Argos satellite uplink, mobile data telephony or GPRS and a range of analytical...

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Precision and recall

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information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved...

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Boolean model of information retrieval

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The (standard) Boolean model of information retrieval (BIR) is a classical information retrieval (IR) model and, at the same time, the first and most-adopted...

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Amazon S3 Glacier

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services, and is designed for long-term storage of data that is infrequently accessed and for which retrieval latency times of 3 to 5 hours are acceptable....

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Database index

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A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage...

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Digital tachograph

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as the gearbox output shaft turns. These pulses are interpreted as speed data by the head. The sender unit and head are electronically paired and the pulses...

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Knowledge retrieval

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Knowledge retrieval seeks to return information in a structured form, consistent with human cognitive processes as opposed to simple lists of data items....

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Hash function

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hash tables are used in data storage and retrieval applications to access data in a small and nearly constant time per retrieval. They require an amount...

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Coded wire tag

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have also been used in Japan. Radio-frequency identification Acoustic tag Data storage tag Pop-up satellite archival tag Nandor, G.F., Longwill, J.R., Webb...

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WinFS

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application. Higher integrity data cannot be accessed by a lower integrity process. The primary mode of data retrieval from a WinFS store is querying...

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Metadata

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Aaron. "Metadata-Driven Design: Designing a Flexible Engine for API Data Retrieval". InfoQ. Archived from the original on 26 April 2017. Retrieved 25 April...

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MedDRA

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(pharmacovigilance or clinical research phase 4), and for safety information data entry, retrieval, evaluation, and presentation. Also, it is the adverse event classification...

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Index

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Indexed Sequential Access Method (ISAM), used for indexing data for fast retrieval Lookup table, a data structure used to store precomputed information Site...

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Flight recorder

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aircraft to increase the probability of successful data retrieval after a crash. Carriage of data recording equipment became mandatory in UK-registered...

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OPeNDAP

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"Open-source Project for a Network Data Access Protocol," an endeavor focused on enhancing the retrieval of remote, structured data through a Web-based architecture...

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Google Scholar

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maintain an Application Programming Interface that may be used to automate data retrieval. Use of web scrapers to obtain the contents of search results is also...

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Twistor memory

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operation by working all of the planes at once. Between reads or writes the data was stored magnetically. This means that core is a non-volatile memory. Manufacturing...

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Page

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Page (computer memory), a block of virtual memory Paging, a method of data retrieval Bank switching, sometimes known as paging Electronic page, formatting...

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Data architecture

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managing transaction data and (master) reference data. Another is splitting data capture systems from data retrieval systems (as done in a data warehouse). Technology...

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Music information retrieval

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Music information retrieval (MIR) is the interdisciplinary science of retrieving information from music. Those involved in MIR may have a background in...

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