Online Analytical Processing. OLAP allows users to analyze database information (usually historical data) from multiple database systems at one time. Instead of providing data in a multi-dimensional (row and column) format, OLAP data is multidimensional, thereby facilitating the grouping, summarization and comparison of data in various ways. Such reports include, for example, comparing purchases in Q1 to purchases in Q2 to purchases of a branch in another country in Q1. These reports provide business managers with data required for trend analysis and decision making.
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