DBMS > PostgreSQL vs. RRDtool vs. TimesTen
System Properties Comparison PostgreSQL vs. RRDtool vs. TimesTen
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|Editorial information provided by DB-Engines|
|Name||PostgreSQL Xexclude from comparison||RRDtool Xexclude from comparison||TimesTen Xexclude from comparison|
|Description||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Industry standard data logging and graphing tool for time series data. RRD is an acronym for round-robin database. The data is stored in a circular buffer, thus the system storage footprint remains constant over time.||In-Memory RDBMS compatible to Oracle|
|Primary database model||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Time Series DBMS||Relational DBMS|
|Secondary database models||Document store|
|Developer||PostgreSQL Global Development Group www.postgresql.org/developer||Tobias Oetiker||Oracle, TimesTen Performance Software, HP originally founded in HP Labs it was acquired by Oracle in 2005|
|Initial release||1989 1989: Postgres, 1996: PostgreSQL||1999||1998|
|Current release||15.1, November 2022||1.8.0, 2022||11 Release 2 (184.108.40.206.0)|
|License Commercial or Open Source||Open Source BSD||Open Source GPL V2 and FLOSS||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C||C Implementations in Java (e.g. RRD4J) and C# available|
|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||yes||Numeric data only||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||yes specific XML-type available, but no XML query functionality.||no Exporting into and restoring from XML files possible||no|
|SQL Support of SQL||yes standard with numerous extensions||no||yes|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
|in-process shared library|
Oracle Call Interface (OCI)
|Supported programming languages||.Net|
|C with librrd library|
C# with a different implementation of RRDTool
Java with a different implementation of RRDTool
PHP with a wrapper library
|Server-side scripts Stored procedures||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||no||PL/SQL|
|Partitioning methods Methods for storing different data on different nodes||partitioning by range, list and (since PostgreSQL 11) by hash||none||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication other methods possible by using 3rd party extensions||none||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||none||Immediate Consistency or Eventual Consistency depending on configuration|
|Foreign keys Referential integrity||yes||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes by using the rrdcached daemon||yes|
|Durability Support for making data persistent||yes||yes||yes by means of logfiles and checkpoints|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||no||fine grained access rights according to SQL-standard|
More information provided by the system vendor
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|Related products and services|
|3rd parties||Aiven for PostgreSQL: The familiar open source PostgreSQL® that you know and love, with no proprietary features or add-ons that will lock you in.
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