table lookup

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• table lookup —    Searching for data in a table; commonly used in data entry validation and any operation that must match an item of data with a known set of values …   IT glossary of terms, acronyms and abbreviations

• lookup — look up n. (Computers) an operation that determines whether one or more of a set of items has a specified property; as, they wrote a program to do a table lookup. Syn: search. [WordNet 1.5] …   The Collaborative International Dictionary of English

• Lookup table — In computer science, a lookup table is a data structure, usually an array or associative array, often used to replace a runtime computation with a simpler array indexing operation. The savings in terms of processing time can be significant, since …   Wikipedia

• Lookup — In computing, lookup usually refers to searching a data structure for an item that satisfies some specified property . For example, variable lookup performed by a (scripting) language interpreter, virtual machine or other similar engine usually… …   Wikipedia

• Lookup table — Una lookup table (del inglés tabla de consulta ) es, en informática, una estructura de datos, normalmente un arreglo o un arreglo asociativo, que se usa para substituir una rutina de computación con una simple indexación de los arreglos. Son muy… …   Wikipedia Español

• lookup — noun an operation that determines whether one or more of a set of items has a specified property (Freq. 8) they wrote a program to do a table lookup • Syn: ↑search • Hypernyms: ↑operation …   Useful english dictionary

• Hash table — Not to be confused with Hash list or Hash tree. Unordered map redirects here. For the proposed C++ class, see unordered map (C++). Hash Table Type unsorted dictionary Invented 1953 Time complexity in big O notation Average Worst case Space …   Wikipedia

• Control table — This simple control table directs program flow according to the value of the single input variable. Each table entry holds a possible input value to be tested for equality (implied) and a relevant subroutine to perform in the action column. The… …   Wikipedia

• Page table — A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses. Virtual addresses are those unique to the accessing process. Physical… …   Wikipedia

• Transposition table — In computer chess and other computer games, transposition tables are used to speed up the search of the game tree. Transposition tables are primarily useful in perfect information games, meaning the entire state of the game is known to all… …   Wikipedia

• Mathematical table — Before calculators were cheap and plentiful, people would use mathematical tables lists of numbers showing the results of calculation with varying arguments to simplify and drastically speed up computation. Tables of logarithms and trigonometric… …   Wikipedia