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2. kdb+ - Wikipedia

   en.wikipedia.org/wiki/Kdb+

   kdb+ is a column-based relational time series database (TSDB) with in-memory (IMDB) abilities, developed and marketed by KX. [1] The database is commonly used in high-frequency trading (HFT) to store, analyze, process, and retrieve large data sets at high speed. [2] kdb+ has the ability to handle billions of records and analyzes data within a ...

3. List of in-memory databases - Wikipedia

   en.wikipedia.org/wiki/List_of_in-memory_databases

   In SQL Server 2012, an in-memory technology called xVelocity column-store indexes targeted for data-warehouse workloads. Mimer SQL: Mimer Information Technology SQL, ODBC, JDBC, ADO.NET, Embedded SQL, C, C++, Python Proprietary Mimer SQL is a general purpose relational database server that can be configured to run fully in-memory.

4. List of column-oriented DBMSes - Wikipedia

   en.wikipedia.org/wiki/List_of_column-oriented_DBMSes

   An embeddable, in-process, column-oriented SQL OLAP RDBMS Databend Rust An elastic and reliable Serverless Data Warehouse InfluxDB: Rust Time series database: Greenplum Database C Support and extensions available from VMware. MapD: C++ MariaDB ColumnStore C & C++ Formerly Calpont InfiniDB: Metakit: C++ MonetDB: C

5. Apache Cassandra - Wikipedia

   en.wikipedia.org/wiki/Apache_Cassandra

   Apache Cassandra is a free and open-source database management system designed to handle large volumes of data across multiple commodity servers.The system prioritizes availability and scalability over consistency, making it particularly suited for systems with high write throughput requirements due to its LSM tree indexing storage layer. [2]

6. MUMPS - Wikipedia

   en.wikipedia.org/wiki/MUMPS

   MUMPS technology has since expanded as the predominant database for health information systems and electronic health records in the United States. MUMPS-based information systems, such as Epic Systems ', provide health information services for over 78% of patients across the U.S. [ 1 ]

7. Comparison of relational database management systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_relational...

   Informix supports a database mode called ANSI mode which supports creating objects with the same name but owned by different users. PostgreSQL and some other databases have support for foreign schemas, which is the ability to import schemas from other servers as defined in ISO/IEC 9075-9 (published as part of SQL:2008). This appears like any ...