The VARCHAR2 datatype stores variable-length character strings.

A validation rule is a criterion used in the process of data validation, after the data has been encoded onto an input medium. This is distinct from formal verification, where the operation of a program is determined to be correct per the specification.

PyScripter is a free and open-source Python integrated development environment (IDE) for Windows. It is built in Object Pascal and released under the MIT license.

This allows the user to custom draw controls at run time in the Win32 Api. Any existing control can have its appearance altered through the paint message. This is C, C++,C# and Delphi applicable.

CIDER is an Emacs package for interactive Clojure development.

BAPIs (Business Application Programming Interface) are specific methods for SAP business objects, which are stored in the Business Object Repository (BOR) of the SAP system and are used for carrying out particular business tasks.

A method of software testing that involves modifying the source code or compiled intermediate code (Java: byte code, .NET: IL). Test suites that do not fail under each of these "mutations" is considered to be inadequate.

PackageMaker is a utility for creating installer packages to be used with Mac OS X. Earlier, it was bundled with Apple's Xcode developer tools but with release of XCode 4.3, it comes in separate Auxiliary Tools package. It supports both GUI mode and command-line mode of creating installer packages for MacOS.

Webrat is an acceptance testing library for Web applications written in Ruby.

On POSIX-compliant platforms, SIGKILL is the signal sent to a process to cause it to terminate immediately. The symbolic constant for SIGKILL is defined in the header file signal.h. Symbolic signal names are used because signal numbers can vary across platforms, however on the vast majority of systems, SIGKILL is signal #9.