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  2. TimescaleDB - Wikipedia

    en.wikipedia.org/wiki/TimescaleDB

    TimescaleDB is an open-source time series database [3] [4] [5] developed by Timescale Inc. It is written in C and extends PostgreSQL. [6] [7] TimescaleDB is a relational database [8] and supports standard SQL queries. Additional SQL functions and table structures provide support for time series data oriented towards storage, performance, and ...

  3. Multi-master replication - Wikipedia

    en.wikipedia.org/wiki/Multi-master_replication

    SymmetricDS is database independent, data synchronization software. It uses web and database technologies to replicate tables between relational databases in near real time. The software was designed to scale for a large number of databases, work across low-bandwidth connections, and withstand periods of network outage.

  4. PostgreSQL - Wikipedia

    en.wikipedia.org/wiki/PostgreSQL

    The first PostgreSQL release formed version 6.0 on January 29, 1997. Since then developers and volunteers around the world have maintained the software as The PostgreSQL Global Development Group. [2] The project continues to make releases available under its free and open-source software PostgreSQL License. Code comes from contributions from ...

  5. Category:Free database management systems - Wikipedia

    en.wikipedia.org/wiki/Category:Free_database...

    Database engine or management software that has been released under an open source license. ... PostgreSQL (19 P) Pages in category "Free database management systems"

  6. List of object–relational mapping software - Wikipedia

    en.wikipedia.org/wiki/List_of_object–relational...

    Doctrine, open source ORM for PHP, Free software (MIT) CakePHP, ORM and framework, open source (scalars, arrays, objects); based on database introspection, no class extending; CodeIgniter, framework that includes an ActiveRecord implementation; Yii, ORM and framework, released under the BSD license. Based on the ActiveRecord pattern

  7. List of relational database management systems - Wikipedia

    en.wikipedia.org/wiki/List_of_relational...

    PostgreSQL: PostgreSQL License Postgres Plus Advanced Server: Proprietary Progress Software: Proprietary R:Base: Proprietary RethinkDB: Apache License 2.0 SAND CDBMS: Proprietary SAP HANA: Proprietary SAP Adaptive Server Enterprise: Proprietary SAP IQ (formerly known as Sybase IQ) Proprietary SingleStore: Proprietary Snowflake Cloud Data ...

  8. List of free and open-source software packages - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    This is a list of free and open-source software packages (), computer software licensed under free software licenses and open-source licenses.Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source. [1]

  9. Denormalization - Wikipedia

    en.wikipedia.org/wiki/Denormalization

    In computing, denormalization is the process of trying to improve the read performance of a database, at the expense of losing some write performance, by adding redundant copies of data or by grouping data. [1] [2] It is often motivated by performance or scalability in relational database software needing to carry out very large numbers of read ...