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Hekaton (database) Hekaton (also known as SQL Server In-Memory OLTP) is an in-memory database for OLTP workloads built into Microsoft SQL Server. [ 1] Hekaton was designed in collaboration with Microsoft Research [ 2] and was released in SQL Server 2014. [ 3][ 4] Traditional RDBMS systems were designed when memory resources were expensive, and ...
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 ...
Oracle Database. Oracle Database (commonly referred to as Oracle DBMS, Oracle Autonomous Database, or simply as Oracle) is a proprietary multi-model [ 4] database management system produced and marketed by Oracle Corporation . It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP ...
Relational database. A relational database ( RDB[ 1]) is a database based on the relational model of data, as proposed by E. F. Codd in 1970. [ 2] A database management system used to maintain relational databases is a relational database management system ( RDBMS ). Many relational database systems are equipped with the option of using SQL ...
Software as a service ( SaaS / sæs / [ 1]) is a form of cloud computing in which the provider offers the use of application software to a client and manages all the physical and software resources used by the application. [ 2] The distinguishing feature of SaaS compared to other software delivery models is that it separates "the possession and ...
University of Cambridge. Occupation (s) author, lecturer, researcher, and consultant, specializing in relational database theory. Employer. (until 1983) IBM. Known for. Relational database theory. Chris John Date (born 18 January 1941 [ 1]) is an independent author, lecturer, researcher, and consultant, specializing in relational database theory.
A database shard, or simply a shard, is a horizontal partition of data in a database or search engine. Each shard is held on a separate database server instance, to spread load. Some data within a database remains present in all shards, [ a] but some appear only in a single shard. Each shard (or server) acts as the single source for this subset ...
Relational algebra is a branch of mathematics that studies the manipulation and analysis of data in relational databases. It defines a set of operations, such as selection, projection, join, and union, that can be applied to relations or sets of tuples. Learn more about the concepts and notation of relational algebra on Wikipedia, including the rename operation that changes the attribute name ...