- column index
- мат.столбцовый индекс
English-Russian scientific dictionary. 2008.
column index
Смотреть что такое "column index" в других словарях:
column — index chapter (division) Burton s Legal Thesaurus. William C. Burton. 2006 … Law dictionary
Index locking — is a procedure in which running one task on a database table blocks all access by other tasks to the entire table. With index locking it may be necessary to lock the index build for a column, not just the data items themselves. Index locking… … Wikipedia
Index (database) — A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indexes can be created using one or more columns of a database table,… … Wikipedia
Index of coincidence — In cryptography, coincidence counting is the technique (invented by William F. Friedman[1]) of putting two texts side by side and counting the number of times that identical letters appear in the same position in both texts. This count, either as … Wikipedia
Column family — A column family is a NoSQL object that contains columns of related data. It is a tuple (pair) that consists of a key value pair, where the key is mapped to a value that is a set of columns. In analogy with relational databases, a column family is … Wikipedia
Column chromatography — A chemist in the 1950s using column chromatography. The Erlenmeyer receptacles are on the floor. Column chromatography in chemistry is a method used to purify individual chemical compounds from mixtures of compounds. It is often used for… … Wikipedia
Index (information technology) — This is referring to Index in the context of Information Technology. For other meanings, see Index. In computer science, an index can be: # an integer which identifies an array element # a pointer data element. # a data structure that enables… … Wikipedia
Column wave — The column wave is a 16th century stage machine created to mimic movement of the ocean. Developed by Nicola Sabbatini, the machine was an effective way to give the appearance of a wave filled sea. It was used to great effect through the following … Wikipedia
Index calculus algorithm — In group theory, the index calculus algorithm is an algorithm for computing discrete logarithms. This is the best known algorithm for certain groups, such as mathbb{Z} m^* (the multiplicative group modulo m ).Dubious|date=April 2008 Description… … Wikipedia
Bitmap index — A bitmap index is a special kind of database index.Bitmap indexes have traditionally been considered to work well for data such as gender, which has a small number of distinct values, e.g., male and female, but many occurrences of those values.… … Wikipedia
Standard column family — A standard column family consists of a (unique) row key and a number of columns. The standard column family is a NoSQL object that contains columns of related data. It is a tuple (pair) that consists of a key value pair, where the key is mapped… … Wikipedia
