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Computer language used to make queries into databases and information systems
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
Query_language
Syntax used to query databases
Data query language (DQL) is part of the base grouping of SQL sub-languages. These sub-languages are mainly categorized into four categories: a data query
Data_query_language
Relational database programming language
Structured Query Language (SQL) (pronounced /ˌɛsˌkjuˈɛl/ S-Q-L; or alternatively as /ˈsiːkwəl/ "sequel") is a domain-specific language used to manage data, especially
SQL
Declarative graph query language
Cypher is a declarative graph query language that allows for expressive and efficient data querying in a property graph. Cypher was largely an invention
Cypher_(query_language)
Programming language for manipulating data
writing. A popular data manipulation language is that of Structured Query Language (SQL), which is used to retrieve and manipulate data in a relational database
Data_manipulation_language
Microsoft .NET Framework component
Language Integrated Query (LINQ, pronounced "link") is a Microsoft .NET framework component that adds native data querying abilities to .NET languages
Language_Integrated_Query
Syntax for defining data structures
language syntax describing the records, fields, and sets of the user data model. Later it was used to refer to a subset of Structured Query Language (SQL)
Data_definition_language
Query language for astronomical data
Astronomical Data Query Language (ADQL) is a language for astronomical data query based on SQL 92. ADQL is a specialized variant of the SQL query language adapted
Astronomical Data Query Language
Astronomical_Data_Query_Language
Resource Description Framework query language, a W3C recommendation
An RDF query language is a computer language, specifically a query language for databases, able to retrieve and manipulate data stored in Resource Description
RDF_query_language
Query language for property graphs
GQL (Graph Query Language) is a standardized query language for property graphs first described in ISO/IEC 39075, released in April 2024 by ISO/IEC. The
Graph_Query_Language
Query language
Facebook Query Language (FQL) is a query language that allows querying Facebook user data by using a SQL-style interface, avoiding the need to use the
Facebook_Query_Language
Organized collection of data in computing
considerations, including data modeling, efficient data representation and storage, query languages, security and privacy of sensitive data, and distributed computing
Database
Query language for object-oriented databases
Object Query Language (OQL) is a query language standard for object-oriented databases modeled after SQL and developed by the Object Data Management Group
Object_Query_Language
Topics referred to by the same term
Deltarune Query, a precise request for information retrieval made to a database, data structure or information system Query language, a computer language used
Query
SQL-like query language
Yahoo! Query Language (YQL) is an SQL-like query language created by Yahoo! as part of their Developer Network. YQL is designed to retrieve and manipulate
Yahoo_Query_Language
Computing language
automata and functional language foundation enable Gremlin to naturally support imperative and declarative querying, host language agnosticism, user-defined
Gremlin_(query_language)
RDF query language
Protocol and RDF Query Language) is an RDF query language—that is, a semantic query language for databases—able to retrieve and manipulate data stored in Resource
SPARQL
Cloud-based data warehouse service
(PaaS) that supports querying using a dialect of SQL and Graph Query Language. It also has built-in machine learning capabilities. BigQuery was announced in
BigQuery
Formula and data query language
Data Analysis Expressions (DAX) is the native formula and query language for Microsoft PowerPivot, Power BI Desktop and SQL Server Analysis Services (SSAS)
Data_Analysis_Expressions
Instruction set which governs access to a database
component of Structured Query Language (SQL). Data Control Language is one of the logical groups in SQL Commands. SQL is the standard language for relational database
Data_control_language
Way to obtain data from a database
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
Data_retrieval
Query language
Data Mining Extensions (DMX) is a query language for data mining models supported by Microsoft's SQL Server Analysis Services product. Like SQL, it supports
Data_Mining_Extensions
Multi-model database
supports three data models (graphs, JSON documents, key/value) with one database core and a unified query language AQL (ArangoDB Query Language). AQL is mainly
ArangoDB
Data query language developed by Facebook
GraphQL is a data query and manipulation language that allows specifying what data is to be retrieved ("declarative data fetching") or modified. A GraphQL
GraphQL
Relational database access language
QUEL is a relational database query language, based on tuple relational calculus, with some similarities to SQL. It was created as a part of the Ingres
QUEL_query_languages
ETL tool developed by Microsoft
Power Query is an ETL tool created by Microsoft for data extraction, loading and transformation, and is used to retrieve data from sources, process it
Power_Query
Digital database whose organization is based on the relational model of data
systems are equipped with the option of using SQL (Structured Query Language) for querying and updating the database. The concept of relational database
Relational_database
Database access software
SQL/DS (Structured Query Language/Data System), released in 1981, was IBM's first commercial relational-database management system. It implemented the
IBM_SQL/DS
Collaborative multilingual knowledge graph
the Wikidata Query Service, which lets users run queries on the data contained in Wikidata. The service uses SPARQL as the query language. As of November
Wikidata
Functional programming and query language for XML
(XML Query) is a query language and functional programming language designed to query and transform collections of structured and unstructured data, primarily
XQuery
Standard syntax for querying JSON values
In computer software, JSONPath is a query language for querying values in JSON. The uses of JSONPath include: Selecting a specific node in a JSON value
JSONPath
Relational database management system, first implementation of SQL
implementation of SQL, which has since become the standard relational data query language. It was also the first system to demonstrate that a relational database
IBM_System_R
Query entered into a web search engine
used. They vary greatly from standard query languages, which are governed by strict syntax rules as command languages with keyword or positional parameters
Web_query
Jakarta Persistence Query Language (JPQL; formerly Java Persistence Query Language) is a platform-independent object-oriented query language defined as part
Jakarta Persistence Query Language
Jakarta_Persistence_Query_Language
Declarative logic programming language
from Prolog. It is often used as a query language for deductive databases. Datalog has been applied to problems in data integration, networking, program
Datalog
Aspect of information processing
"Semantics for Big Data Integration and Analysis" (PDF). AAAI Fall Symposium on Semantics for Big Data. 2013. "Introduction to Graph Query Languages. From SPARQL
Semantic_query
Database class for storage and retrieval of modeled data
sometimes called "Not only SQL" because they can support SQL-like query languages or work alongside SQL databases in polyglot-persistent setups, where
NoSQL
Distributed query engine
Trino) is a distributed query engine for big data using the SQL query language. Its architecture allows users to query data sources such as Hadoop, Cassandra
Presto_(SQL_query_engine)
Database using graph structures for queries
that uses graph structures for semantic queries with nodes, edges, and properties to represent and store data. A key concept of the system is the graph
Graph_database
Computer software system
static data in conventional databases. A DBMS also offers a flexible query processing so that the information needed can be expressed using queries. However
Data_stream_management_system
Functional data processing and query language
(pronounced "jackal") is a functional data processing and query language most commonly used for JSON query processing on big data. It started as an open source
Jaql
IT architecture separating actions and reads
Eiffel programming language. It states that every method should either be a command that performs an action, or a query that returns data to the caller, but
Command–query_separation
Type of information retrieval using LLMs
documents, then respond to user queries. These documents supplement information from the LLM's pre-existing training data. This allows LLMs to use domain-specific
Retrieval-augmented generation
Retrieval-augmented_generation
2023 edition of the SQL standard
technology – Database languages – SQL") is the ninth edition of the ISO (1987) and ANSI (1986) standard for the SQL database query language. It was formally
SQL:2023
Graph database implemented in Java
in Java and accessible from software written in other languages using the Cypher query language through a transactional HTTP endpoint, or through the
Neo4j
Object-oriented query language
object-oriented query language used to retrieve data from relational database management systems. It is reminiscent of the standard query language SQL and the
.QL
Database query language
Query by Example (QBE) is a database query language for relational databases. Query by Example was devised by Moshé M. Zloof at IBM Research during the
Query_by_Example
Database for storage and retrieval of triples
triplestore is stored and retrieved via a query language. SPARQL is the W3C-standardized query language for querying RDF data, and is implemented by most actively
Triplestore
Database engine
data warehouse software project. It is built on top of Apache Hadoop for providing data query and analysis. Hive gives an SQL-like interface to query
Apache_Hive
Type of machine learning model
transformer-based models in 2017, some language models were considered large relative to the computational and data constraints of their time. In the early
Large_language_model
Free and open-source object relational database management system
Andrew Yu and Jolly Chen replaced the POSTQUEL query language interpreter with one for the SQL query language, creating Postgres95. The monitor console was
PostgreSQL
OLAP query language
(MDX) is a query language for online analytical processing (OLAP) using a database management system. Much like SQL, it is a query language for OLAP cubes
MultiDimensional_eXpressions
Combining data from multiple sources
Issues with combining heterogeneous data sources, often referred to as information silos, under a single query interface have existed for some time.
Data_integration
Database model
data structures for storing the data and retrieval procedures for answering queries. Most relational databases use the SQL data definition and query language;
Relational_model
System for managing connected databases
different query languages, federated database systems can apply wrappers to the subqueries to translate them into the appropriate query languages. McLeod
Federated_database_system
Cloud-based data indexing and querying service
of the Microsoft Azure Cloud Platform providing indexing and querying capabilities for data uploaded to Microsoft servers. The Search as a service framework
Azure_Cognitive_Search
Cloud-based NoSQL document database service
structured and semi-structured data into various datatypes. GQL (Google Cloud Datastore Query Language) is a query language just like SQL and it is designed
Google_Cloud_Datastore
Free and open-source graph database
system with a rich query language. The design of the underlying data structure, which is implemented in a Rust library, uses a succinct data structures and
TerminusDB
Open-source, strongly-typed database
data from the TypeDB database, programmers use the query language TypeQL. The language is noteworthy for its intended resemblance to natural language
TypeDB
American software company
parallel processing engine to process algorithms and queries. It has its own graph query language that is similar to SQL. TigerGraph also provides a software
TigerGraph
Computer bug exploit caused by invalid data
untrusted data to an interpreter, which then executes the injected text as code. Injection flaws are often found in services like Structured Query Language (SQL)
Code_injection
API for Java
Edition platform, from Oracle Corporation. It provides methods to query and update data in a database, and is oriented toward relational databases. A JDBC-to-ODBC
Java_Database_Connectivity
Programming technique
model SQL (Structured Query Language) Java Data Objects (JDO) Java Persistence API (JPA), now Jakarta Persistence Service Data Objects Entity Framework
Object–relational_mapping
Relational model
declarative database-query language for data manipulation in this data model. It formed the inspiration for the database-query languages QUEL and SQL, of
Tuple_relational_calculus
Search engine processing step
stemming for natural-language access to Slovene textual data". Information Scientist. 3 (4). SAGE. Li, Hang; Xu, Jun; Zhang, Min (2021). Query Understanding
Query_understanding
Computer server providing database services
of data while database slave servers are synchronized backups of the master acting as proxies. Most database applications respond to a query language. Each
Database_server
SQL statement that returns a result set of rows from one or more tables
the most commonly used data manipulation language (DML) command. As SQL is a declarative programming language, SELECT queries specify a result set, but
Select_(SQL)
Theory of relational databases
particularly query languages for such databases, chief among which is SQL. Relational databases store tabular data represented as relations. Queries over relational
Relational_algebra
High-performance computer cluster
high-performance online query applications using indexed data files (Roxie). The HPCC platform also includes a data-centric declarative programming language for parallel
HPCC
Method of extracting data from websites
in terms of a URL common scheme. Moreover, some semi-structured data query languages, such as XQuery and the HTQL, can be used to parse HTML pages and
Web_scraping
Jakarta EE persistence API
Jakarta EE 8 and below) The Jakarta Persistence Query Language (JPQL; formerly Java Persistence Query Language) Object/relational metadata The final release
Jakarta_Persistence
Software layer that provides access to data
a consistent interface for retrieving, writing, or querying data. Depending on the system, a data access layer may be implemented as application code
Data_access_layer
Method of creating database queries
spreadsheets. Query by Example Microsoft Access Microsoft SQL Server Power Query Zloof, M.M. (1977). "Query-by-Example: A data base language". IBM Systems
Microsoft_Query
Processing mode
that for complex queries OLAP cubes can produce an answer in around 0.1% of the time required for the same query on OLTP relational data. The most important
Online_analytical_processing
Topics referred to by the same term
graph query language GraphQL, open-source data query and manipulation language for APIs, and a runtime for fulfilling queries with existing data Query language
GQL
In databases, cached query results
a database object that contains the results of a query. For example, it may be a local copy of data located remotely, or may be a subset of the rows and/or
Materialized_view
Type of computer program
typically provide an API or query language that enables retrieval based on document content or associated metadata. For example, a query may return all documents
Document-oriented_database
reports). Query Language (473L Query) Query Language was "very similar to the COLINGO query language and was "a constrained English language…for man-machine
IBM 473L Command and Control System
IBM_473L_Command_and_Control_System
(Structured Query Language) statements are classified in various ways, which can be grouped into sublanguages, commonly: a data query language (DQL), a data definition
Sublanguage
Database manager part of the Microsoft 365 package
programming language rather than macros, except where web deployment is a business requirement. To manipulate data in tables and queries in VBA or macros
Microsoft_Access
Finding information for an information need
information need can be specified in the form of a search query. In the case of document retrieval, queries can be based on full-text or other content-based indexing
Information_retrieval
Data-interchange format
functional data processing and query language most commonly used for JSON query processing jq – a "JSON query language" and high-level programming language JSONiq
JSON
Formal language for communicating with a computer
starting programs Query – for querying databases and information systems Transformation – for transforming the text of a formal language into text that meets
Computer_language
Business analytics service by Microsoft
Power BI are facilitated in Power Query through built-in connectors to pull data from a wide variety of sources. Power Query provides a GUI which allows users
Microsoft_Power_BI
Typographic character indicating a question (?)
interrogation point, query, or eroteme in journalism) is a punctuation mark that indicates a question or interrogative clause or phrase in many languages. The history
Question_mark
programs. It is a subset of SQL (Structured Query Language) and acts as an interface standard for transferring data between proprietary store systems like
Standard_Interchange_Language
Topics referred to by the same term
HQL may refer to: Hibernate Query Language, a language for writing queries against Hibernate data objects Tashkurgan Khunjerab Airport (IATA: HQL), Kashgar
HQL
American artificial intelligence company
and frameworks that enable large language models (LLMs) to ingest, index, and query structured and unstructured data sources. LlamaIndex traces its origins
LlamaIndex
data, supporting the automatic semantic matching between queries and databases. Schema-agnosticism is the property of a database of mapping a query issued
Schema-agnostic_databases
Data warehousing schema
denormalization are: Simpler queries – star-schema join-logic is generally simpler than the join logic required to retrieve data from a highly normalized
Star_schema
Unit of information
useful information can be extracted. Data is collected using techniques such as measurement, observation, query, or analysis, and is typically represented
Data
Database management system
schemas and in the query language. Also, as with pure relational systems, it supports extension of the data model with custom data types and methods.
Object–relational_database
Text query method in information retrieval
typed into the search query area, and sometimes other types of data) and expanding the search query to match additional documents. Query expansion involves
Query_expansion
hierarchical query is a type of SQL query that handles hierarchical model data. These are useful for working with databases of graph-structured data, such as
Hierarchical and recursive queries in SQL
Hierarchical_and_recursive_queries_in_SQL
Method for data management
optimize speed and performance in finding relevant documents for a search query. Without an index, the search engine would scan every document in the corpus
Search_engine_indexing
Platform for building AI from enterprise data
running AI queries across different data systems. MindsDB offers a federated query engine – a system that allows SQL queries to run across multiple databases
MindsDB
Type of data structure
initial [0,0,...,0] update increment() let g = myId() P[g] := P[g] + 1 query value() : integer v let v = Σi P[i] compare (X, Y) : boolean b let b = (∀i
Conflict-free replicated data type
Conflict-free_replicated_data_type
Family of database software by Microsoft
database management system developed by Microsoft using Structured Query Language (SQL, often pronounced "sequel"). As a database server, it is a software
Microsoft_SQL_Server
SQL database engine software
the acronym for Structured Query Language. A relational database organizes data into one or more data tables in which data may be related to each other;
MySQL
Uniqueness of data in a database column
In SQL (Structured Query Language), the term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database
Cardinality_(SQL_statements)
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
Male
Irish
 From Irish Gaelic Mac Dara, DARA means "son of oak." Compare with other forms of Dara.
Male
Hebrew
Variant spelling of Hebrew Dathan, DATAN means "belonging to a fountain."
Female
Slavic
 Short form of Slavic Bogdana, DANA means "gift from God." Compare with other forms of Dana.
Male
English
English surname transferred to unisex forename use, possibly DANA means "from Denmark."
Female
English
 English surname transferred to unisex forename use, possibly DANA means "from Denmark." Compare with other forms of Dana.
Male
Iranian/Persian
 Short form of Persian Dârayavahush, DARA means "possesses a lot, wealthy." Compare with other forms of Dara.
Female
Hindi/Indian
(लता) Hindi name derived from a plant name, from the Sanskrit word lata, LATA means "creeper," in reference to a creeping plant.
Male
Hebrew
(דֶּרַע) Hebrew name DARA means "the arm." In the bible, this is the name of a son of Zerah. Compare with other forms of Dara.
Female
Hebrew
(×“Ö¼Ö¸× Ö¸×”) Feminine form of Hebrew Dan, DANA means "judge." Compare with other forms of Dana.
Female
Hebrew
(דִּיתָה) Pet form of Hebrew Yehuwdiyth, DITA means "Jewess" or "praised." Compare with another form of Dita.
Female
Finnish
Variant form of Finnish Aada, AATA means "noble."
Female
Polish
 Variant spelling of Polish Dyta, DITA means "rich battle." Compare with another form of Dita.
Girl/Female
Gujarati, Indian, Kannada
Njn
Male
Turkish
Turkish name ATA means "ancestor."
Female
English
 Middle English name DARA means "brave, daring." Compare with another form of Dara.
Female
Finnish
 Short form of Finnish Katariina, KATA means "pure." Compare with other forms of Kata.
Female
Polish
Short form of Polish Edyta, DYTA means "rich battle."
Female
Russian
 Short form of Russian Yekaterina, KATA means "pure." Compare with other forms of Kata.
Male
Irish
Irish Gaelic name MAC DARA means "son of oak." This is the name of a patron saint and is still common in Ireland, especially in Connemara.
Female
Hungarian
 Short form of Hungarian Katalin, KATA means "pure." Compare with other forms of Kata.
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
Girl/Female
Hindu
Saviour, She who frees, She who delivers from sin, Another name for Durga, Goddess Parvati
Boy/Male
Greek Spanish
Friendly.
Boy/Male
Indian, Sanskrit
Celestial
Boy/Male
Arabic
Beautiful
Girl/Female
Hindu
Name of a Raga
Girl/Female
Indian, Marathi
A Flower
Boy/Male
Hindu, Indian, Malayalam, Marathi
Hundred Years Old
Boy/Male
Hindu
Boy/Male
Arabic, Muslim
Bright Star
Boy/Male
Hindu, Indian
Boundless; Guest; Mother of Gods
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
DATA QUERY-LANGUAGE
v. t.
To doubt of; to regard with incredulity.
n. & v.
See Querl.
n. pl.
See Datum.
v. i.
To have a doubt; as, I query if he is right.
v. t.
To doubt of; to be uncertain of; to query.
v. t.
To note the time of writing or executing; to express in an instrument the time of its execution; as, to date a letter, a bond, a deed, or a charter.
imp. & p. p.
of Query
pl.
of Datum
n.
That addition to a writing, inscription, coin, etc., which specifies the time (as day, month, and year) when the writing or inscription was given, or executed, or made; as, the date of a letter, of a will, of a deed, of a coin. etc.
pl.
of Query
v. t.
To twirl; to turn or wind round; to coil; as, to querl a cord, thread, or rope.
p. pr. & vb. n.
of Query
v. t.
To put questions about; to elicit by questioning; to inquire into; as, to query the items or the amount; to query the motive or the fact.
n.
That which is asked; inquiry; interrogatory; query.
n.
The fruit of the date palm; also, the date palm itself.
n.
The point of time at which a transaction or event takes place, or is appointed to take place; a given point of time; epoch; as, the date of a battle.
v. t.
To note or fix the time of, as of an event; to give the date of; as, to date the building of the pyramids.
v. t.
Earnest inquiry; question; query.
n.
A question in the mind; a doubt; as, I have a query about his sincerity.
v. t.
To write " query" (qu., qy., or ?) against, as a doubtful spelling, or sense, in a proof. See Quaere.