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Contextual Query Language (CQL), previously known as Common Query Language, [1] is a formal language for representing queries to information retrieval systems such as search engines, bibliographic catalogs and museum collection information.
A query language, also known as data query language or database query language (DQL), is a computer language used to make queries in databases and information systems. In database systems, query languages rely on strict theory to retrieve information. [1] A well known example is the Structured Query Language (SQL).
Work on the Z39.50 protocol began in the 1970s, and led to successive versions in 1988, 1992, 1995 and 2003. The Contextual Query Language (formerly called the Common Query Language) [1] is based on Z39.50 semantics.
Contextual Query Language (or common query language), for information retrieval; Cassandra Query Language, for Apache Cassandra; Classora Query Language, for Classora Knowledge Base; Clinical Quality Language, a high-level, domain-specific language focused on clinical quality and targeted at measure and decision support artifact authors.
Expanding and narrowing your query allows you to add or subtract from the result set by setting additional parameters for your search. A few of the most common and useful examples include: Search for exact matches using quotation marks When you conduct a keyword search, the results will contain all of your keywords but not necessarily as one ...
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SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
The last image we have of Patrick Cagey is of his first moments as a free man. He has just walked out of a 30-day drug treatment center in Georgetown, Kentucky, dressed in gym clothes and carrying a Nike duffel bag.