An OLAP cube is a set of data, organized in a way that facilitates non-predetermined queries for aggregated information, or in other words, online analytical processing. OLAP is one of the computer-based techniques for analyzing business data that are collectively called business intelligence.
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Very large database
A very large database, or VLDB, is a database that contains an extremely high number of tuples (database rows), or occupies an extremely large physical filesystem storage space. The most common definition of VLDB is a database that occupies more than 1 terabyte or contains several billion rows, although naturally this definition changes over time.
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Data cube
In computer programming contexts, a data cube (or datacube) is a three- (or higher) dimensional array of values, commonly used to describe a time series of image data. A data cube is also used in the field of Imaging spectroscopy, since a spectrally-resolved image is represented as a three-dimensional volume. For a time sequence of color images, the array is generally four-dimensional, with the dimensions representing image X and Y coordinates, time, and RGB color plane.
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Online analytical processing
In computing, online analytical processing, or OLAP, is an approach to swiftly answer multi-dimensional analytical queries. OLAP is part of the broader category of business intelligence, which also encompasses relational reporting and data mining.
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Materialized view
A materialized view is a database object that contains the results of a query. For example, it may be a local copy of data located remotely, or may be a subset of the rows and/or columns of a table or join result, or may be a summary based on aggregations of a table's data. Materialized views, which store data based on remote tables, are also known as snapshots. A snapshot can be redefined as a materialized view.
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Cube
In geometry, a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube can also be called a regular hexahedron and is one of the five Platonic solids. It is a special kind of square prism, of rectangular parallelepiped and of trigonal trapezohedron. The cube is dual to the octahedron. It has cubical symmetry. It is special by being a cuboid and a rhombohedron.
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Hypercube
In geometry, a hypercube is an n-dimensional analogue of a square (n = 2) and a cube (n = 3). It is a closed, compact, convex figure whose 1-skeleton consists of groups of opposite parallel line segments aligned in each of the space's dimensions, perpendicular to each other and of the same length. A unit hypercube's longest diagonal in n-dimensions is equal to . An n-dimensional hypercube is also called an n-cube. The term "measure polytope" is also used, notably in the work of H.S.M.
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