A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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Microsoft Access, also known as Microsoft Office Access, is an application development and database development tool from Microsoft. It combines the Microsoft Jet/ACE Database Engine with a graphical …
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a cloud computing technology for hosting web applications in Google-managed data centers. Google App Engine is a Platform as a Service (PaaS) offering for Java, Python, Go, Node.j…
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a control structure in many programming languages that changes the execution flow depending on a condition. Also Include an appropriate language tag such as "java" if your questi…
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an open-source, progressive Javascript framework for building user interfaces that aim to be incrementally adoptable. Vue.js is mainly used for front-end development and requires an intermed…
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AMBIGUOUS; USE SPECIFIC-LANGUAGE TAGS WHENEVER APPLICABLE. A variable is a named data storage location in memory. Using variables, a computer program can store numbers, text, binary data, or a…
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a methodical process of finding and fixing bugs in a computer program. **IMPORTANT NOTE:** This tag is ONLY for questions about debugging techniques or the process of debugging itself, NO…
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a functional programming language featuring strong static typing, lazy evaluation, extensive parallelism and concurrency support, and unique abstraction capabilities.
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the fourth major version of the ASP.NET Model-View-Controller platform for web applications.
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EXCLUSIVELY for PROGRAMMING questions that are directly related to Unix; general software issues should be directed to the Unix & Linux Stack Exchange site or to Super User. The Unix opera…
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a plotting library for Python which may be used interactively or embedded in stand-alone GUIs. Its compact "pyplot" interface is similar to the plotting functions of MATLAB®.
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the process of determining whether someone or something is, in fact, who or what it is declared to be.
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the open source object oriented programming (OOP) language of the Adobe Flash and AIR Platforms. AS3 is widely used for RIAs, mobile apps, and desktop applications. (ActionScr…
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an open source programming language. It is statically-typed, with a syntax loosely derived from C, adding automatic memory management, type safety, some dynamic typing capabilities, additional b…
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an Apache open-source project that provides software for reliable and scalable distributed computing. The core consists of a distributed file system (HDFS) and a resource manager (YARN). …
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A session refers to the communication between a single client and a server. A session is specific to the user and for each user a new session is created to track all the requests from that user.
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an Open Source (Apache 2), Distributed, RESTful, Search Engine based on Lucene.
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an open standard for electronic document exchange maintained by the International Organization for Standardization (ISO). Questions can be about creating, reading, ed…
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Fragments represent reusable behaviors or portions of user interface in an Android app.
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a cryptographic protocol that provides secure communications over the Internet. Often, SSL is used as a blanket term and refers to both the SSL protocol and the Transport…
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a Java specification for accessing, persisting, and managing data between Java objects/classes and a relational database. It is part of the EJB 3.0 specification and …
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a curated set of user interface interactions, effects, widgets, and themes built on top of the jQuery JavaScript Library.
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for questions about Apache Tomcat (or simply Tomcat, formerly also Jakarta Tomcat) which is an open source Servlet Container developed by the Apache Software Foundation (ASF). Most quest…
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a form of parametric polymorphism found in a range of languages, including .NET languages, Java, Swift, and Rust.
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the third major version of Model-View-Controller extension for developing web applications in a .NET framework.
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a platform consisting of Xamarin.iOS, Xamarin.Android, Xamarin.Mac and Xamarin Test Cloud. It allows you to write cross-platform native Apps for iOS, Android and Mac and follow your app thr…
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Apple's application-development framework for macOS, consisting of Foundation, Application Kit, and Core Data. Use the "cocoa-touch" tag for iOS questions.
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A web browser developed by Microsoft and included with Windows. Commonly abbreviated to "IE".
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a web server, reverse proxy, TCP stream proxy and mail proxy, released under a BSD-like license.
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a strategy for deferring operations with high latency or low priority, usually in an attempt to improve performance, responsiveness, and / or composability of software. Suc…
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an e-commerce platform written in PHP atop the Zend framework. Questions should be related to writing code for Magento. General Magento questions may be asked on https://magento.stackexchan…
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an open source continuous integration tool written in Java, that has packages for Linux, Mac OS X, Windows, FreeBSD and OpenBSD. The project was forked from Hudson.
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a universal identifier on the web. A URL is a reference to a web resource at a specific location, and provides a means for retrieving that resource.
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Do not use this tag. For questions related to an aspect of the world wide web, use a more specific tag for it, such as [uri], [html], [http] or [w3c].
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the rapid display of a sequence of visuals in order to create an illusion of movement or change.
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For issues specific to version 4 of Rails. If your question applies to Ruby on Rails in general, use the tag [ruby-on-rails].
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any activity aimed at evaluating an attribute or capability of a program or system and determining that it meets its required results.