Mongoose is a MongoDB object modeling tool, or ODM (Object Document Mapper), written in JavaScript and designed to work in an asynchronous environment.

Animation is the rapid display of a sequence of visuals in order to create an illusion of movement or change.

ASP.NET MVC 4 is the fourth major version of the ASP.NET Model-View-Controller platform for web applications.

A URL (Uniform Resource Locator), is 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.

Use this tag 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 questions should also include a tag specifying the operating system.

cURL is a library and command-line tool for transferring data using various protocols such as HTTP, FTP and SFTP. The cURL project produces two products, libcurl and curl. This tag covers all usages of cURL, regardless of which cURL product is used.

Math involves the manipulation of numbers within a program. For general math questions, please ask on math.stackexchange.com. Note: If your question is about unexpected results in floating point calculations, please read https://stackoverflow.com/questions/588004/is-floating-point-math-broken first.

ActionScript 3 (AS3) is 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. (ActionScript 3 is a dialect of ECMAScript.)

Scalable Vector Graphics (SVG) is an XML-based two-dimensional vector graphics format that can also be used in HTML. Do not add this tag just because your project uses SVG. Instead, add the tag if your question is either about SVG, or closely related to it, like how to achieve something with SVG.

An exception is an unusual condition that requires deviation from the program's normal flow. Normally, an exception should not result in total failure, but instead be attended by an exception handler. Exception handling is a built-in construct in many programming languages. Usually, exceptions are handled by unwinding the stack, thus rolling back to a defined state outside the exception's scope, and then invoking a handler block or routine.

A JOIN is a general operation in relational algebra for a combining operation on two or more relations in a relational database system. JOIN is also keyword of the SQL language for performing this operation.