quality assurance (QA): 1. All actions taken to ensure that standards and procedures are adhered to and that delivered products or services meet performance requirements.  2. The planned systematic activities necessary to ensure that a component, module, or system conforms to established technical requirements. 3. The policy, procedures, and systematic actions established in an enterprise for the purpose of providing and maintaining a specified degree of confidence in data integrity and accuracy throughout the lifecycle of the data, which includes input, update, manipulation, and output.

component: 1. An assembly, or part thereof, that is essential to the operation of some larger assembly and is an immediate subdivision of the assembly to which it belongs.  2. In logistics, a part, or combination of parts having a specified function, that can only be installed or replaced as an entity.  3. In material, an assembly or any combination of parts, subassemblies, and assemblies mounted together in manufacture, assembly, maintenance, or rebuild.

module: 1. An interchangeable subassembly that constitutes part of, i.e., is integrated into, a larger device or system.  2. In computer programming, a program unit that is discrete and identifiable with respect to compiling, combining with other modules, and loading.

system: 1. Any organized assembly of resources and procedures united and regulated by interaction or interdependence to accomplish a set of specific functions. 2. A collection of personnel, equipment, and methods organized to accomplish a set of specific