DCL or may refer to: * 650 in Roman numerals, see

650 (disambiguation) 650 may refer to: * 650 (number)#650s, 650 (number) * Area code 650 * IBM 650 magnetic drum data-processing machine, introduced in 1953 * 650 BC, The year 650 BCE * 650, The year 650 CE * 650C: A standard Bicycle_wheel#650C_triathlon_bicycle_wheels ...

Computers

* Data Center Linux, see Open Source Development Labs *

Data Control Language A data control language (DCL) is a syntax similar to a computer programming language used to control access to data stored in a database (authorization). In particular, it is a component of Structured Query Language (SQL). Data Control Language i ...

, a subset of SQL * Dialog Control Language, a language and interpreter within AutoCAD *

DIGITAL Command Language DIGITAL Command Language (DCL) is the standard command language for many of the operating systems created by Digital Equipment Corporation. DCL was originally implemented for IAS as the Program Development System (PDS), and later added to RSX-1 ...

, the command language used by most of the operating systems from the former Digital Equipment Corporation (DEC) *

Double-checked locking In software engineering, double-checked locking (also known as "double-checked locking optimization") is a software design pattern used to reduce the overhead of acquiring a lock by testing the locking criterion (the "lock hint") before acquiring t ...

, a software design pattern * .dcl, source code files for

Clean (programming language) Clean is a general-purpose purely functional programming language. Originally called the Concurrent Clean System or the Clean System, it has been developed by a group of researchers from the Radboud University in Nijmegen since 1987. Although ...

* .dcl, Delphi Control Library files for

Embarcadero Delphi Delphi is a general-purpose programming language and a software product that uses the Delphi dialect of the Object Pascal programming language and provides an integrated development environment (IDE) for rapid application development of desktop ...

Military

* Char de dépannage DNG/DCL, armoured recovery vehicle

Degrees

Doctor of Canon Law Doctor of Canon Law (, JCD) is the doctoral-level terminal degree in the studies of canon law of the Roman Catholic Church. It can also be an honorary degree awarded by Anglican colleges. It may also be abbreviated ICD or dr.iur.can. (''Iuris Can ...

, for studies of canon law of the Roman Catholic Church *

Doctor of Civil Law Doctor of Civil Law (DCL; ) is a degree offered by some universities, such as the University of Oxford, instead of the more common Doctor of Laws (LLD) degrees. At Oxford, the degree is a higher doctorate usually awarded on the basis of except ...

, an alternative to the Doctor of Laws (LL.D.) degree

Organizations

* Data Connection Ltd, a former name of Metaswitch * Detroit College of Law, now known as the Michigan State University College of Law *

Disney Cruise Line Disney Cruise Line is a cruise line operation that is a subsidiary of The Walt Disney Company. The company was incorporated in 1996 as Magical Cruise Company Limited, through its first vessel ''Disney Magic,'' and is domiciled in London, Englan ...

, a cruise line company (United States)

Places

* Deep Creek Lake State Park, a Maryland state park in Garrett County, United States

Science, technology, and medicine

DCL Technology Demonstrator programme The US DCL (Detection Classification and Localisation) demonstrator program is aimed at proving that an active torpedo detection system is able to resolve a salvo of torpedoes with sufficient time and accuracy that an anti-torpedo torpedo may be fi ...

, a torpedo detection system (U.K.) * Device for Connection of Luminaires, a European plug and socket system for connecting lighting equipment * DICER-like, family of plant genes * Direct

coal liquefaction Coal liquefaction is a process of converting coal into liquid hydrocarbons: liquid fuels and petrochemicals. This process is often known as "coal to X" or "carbon to X", where X can be many different hydrocarbon-based products. However, the most c ...

* Deuterium chloride, DCl, a form of

hydrogen chloride The Chemical compound, compound hydrogen chloride has the chemical formula and as such is a hydrogen halide. At room temperature, it is a colorless gas, which forms white fumes of hydrochloric acid upon contact with atmospheric water vapor. Hyd ...

using deuterium atoms

Sports and games

* Dual County League, a high school athletic conference in Massachusetts, United States * Drone Champions League, a drone racing league {{disambiguation