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In computing, online analytical processing, or OLAP ( / ˈoʊlæp / ), is an approach to quickly answer multi-dimensional analytical (MDA) queries. [ 1] The term OLAP was created as a slight modification of the traditional database term online transaction processing (OLTP). [ 2] OLAP is part of the broader category of business intelligence ...
Star schema. In computing, the star schema or star model is the simplest style of data mart schema and is the approach most widely used to develop data warehouses and dimensional data marts. [ 1] The star schema consists of one or more fact tables referencing any number of dimension tables. The star schema is an important special case of the ...
Graph database. A graph database ( GDB) is a database that uses graph structures for semantic queries with nodes, edges, and properties to represent and store data. [1] A key concept of the system is the graph (or edge or relationship). The graph relates the data items in the store to a collection of nodes and edges, the edges representing the ...
In data warehousing, a fact table consists of the measurements, metrics or facts of a business process. It is located at the center of a star schema or a snowflake schema surrounded by dimension tables. Where multiple fact tables are used, these are arranged as a fact constellation schema. A fact table typically has two types of columns: those ...
Cubes (light-weight open-source OLAP server) ClickHouse. Apache Pinot. Apache Druid. Apache Doris. icCube. Oracle Essbase. Oracle Retail Predictive Application Server (RPAS), a retail specific MOLAP/OLAP server using Berkeley DB for persistence.
Windows, Linux (Wine), macOS (via CrossOver ) Data modeling is supported as part of a complete modeling platform. 2000. ER/Studio. Embarcadero (acquired by IDERA) SMBs and enterprises. Proprietary. Access, Snowflake, Microsoft Azure IBM Db2, Informix, Hitachi HiRDB, Firebird, Interbase, MySQL, MS SQL Server, Netezza, Oracle, PostgreSQL, Sybase ...
A pivot table is a table of values which are aggregations of groups of individual values from a more extensive table (such as from a database, spreadsheet, or business intelligence program) within one or more discrete categories. The aggregations or summaries of the groups of the individual terms might include sums, averages, counts, or other ...
Relational database management system (includes market share data) List of relational database management systems. Comparison of object–relational database management systems. Comparison of database administration tools. Object database – some of which have relational (SQL/ODBC) interfaces. IBM Business System 12 – an historical RDBMS and ...