Tree structure — A tree structure showing the possible hierarchical organization of an encyclopedia … Wikipedia
Christmas tree (oil well) — Oil well Christmas tree In petroleum and natural gas extraction, a Christmas tree, or tree , (not wellhead as sometimes incorrectly referred to) is an assembly of valves, spools, and fittings used for an oil well, gas well, water injection well,… … Wikipedia
R-tree — R trees are tree data structures that are similar to B trees, but are used for spatial access methods i.e., for indexing multi dimensional information; for example, the (X, Y) coordinates of geographical data. A common real world usage for an R… … Wikipedia
дерево ограничений — — [Л.Г.Суменко. Англо русский словарь по информационным технологиям. М.: ГП ЦНИИС, 2003.] Тематики информационные технологии в целом EN containment tree … Справочник технического переводчика
Hierarchy — A hierarchy (Greek: hierarchia (ἱεραρχία), from hierarches, leader of sacred rites ) is an arrangement of items (objects, names, values, categories, etc.) in which the items are represented as being above, below, or at the same level as one… … Wikipedia
environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… … Universalium
Conjunctive query — In database theory, a conjunctive query is a restricted form of first order queries. A large part of queries issued on relational databases can be written as conjunctive queries, and large parts of other first order queries can be written as… … Wikipedia
Safety engineering — is an applied science strongly related to systems engineering and the subset System Safety Engineering. Safety engineering assures that a life critical system behaves as needed even when pieces fail.In the real world the term safety engineering… … Wikipedia
United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… … Universalium
Object composition — In computer science, object composition (not to be confused with function composition) is a way to combine simple objects or data types into more complex ones. Compositions are a critical building block of many basic data structures, including… … Wikipedia
Complexity of constraint satisfaction — The complexity of constraint satisfaction is the application of computational complexity theory on constraint satisfaction. It has mainly been studied for discriminating between tractable and intractable classes of constraint satisfaction… … Wikipedia