Matching Pairs Curso TICs 3Online version Matching columns system by José Caballero 1 Baseline 2 Bottom-Up 3 Assembly 4 Certification 5 Life Cycle Cost Two or more parts or subassemblies joined together to form a complete unit, structure, or other article. The process of confirming that a system or component complies with its specified requirements and is acceptable for operational use. The total cost of acquisition, operation, maintenance, and support of an item throughout its useful life, and including the cost of dispersal. Pertaining to a method or procedure that starts at the lowest level of abstraction and proceeds towards the highest level. A configuration identification document or a set of such documents, formally designated and fixed at a specific time during a configuration item's life cycle.