DBMS > PostgreSQL vs. RocksDB vs. Weaviate
System Properties Comparison PostgreSQL vs. RocksDB vs. Weaviate
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|Editorial information provided by DB-Engines|
|Name||PostgreSQL Xexclude from comparison||RocksDB Xexclude from comparison||Weaviate Xexclude from comparison|
|Description||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Embeddable persistent key-value store optimized for fast storage (flash and RAM)||A cloud-native, realtime vector search engine integrating scalable machine learning models|
|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.||Key-value store||Search engine|
|Secondary database models||Document store|
|Developer||PostgreSQL Global Development Group www.postgresql.org/developer||Facebook, Inc.||SeMI Technologies B.V.|
|Initial release||1989 1989: Postgres, 1996: PostgreSQL||2013||2017|
|Current release||14.4, June 2022||7.3.1, June 2022||1.0.3, January 2021|
|License Commercial or Open Source||Open Source BSD||Open Source BSD||Open Source commercial license available with Weaviate Enterprise|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||FreeBSD|
|Data scheme||yes||schema-free||yes, maps to GraphQL interface|
|Typing predefined data types such as float or date||yes||no||yes string, int, float, geo point, date, cross reference, fuzzy references|
|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||no|
|Secondary indexes||yes||no||yes all data objects are indexed in a semantic vector space (the Contextionary), all primitive fields are indexed|
|SQL Support of SQL||yes standard with numerous extensions||no||GraphQL is used as query language|
|APIs and other access methods||ADO.NET|
native C library
streaming API for large objects
|GraphQL query language|
RESTful HTTP/JSON API
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||no||no|
|Partitioning methods Methods for storing different data on different nodes||partitioning by range, list and (since PostgreSQL 11) by hash||none||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication other methods possible by using 3rd party extensions||none||yes|
|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||Eventual Consistency|
|Foreign keys Referential integrity||yes||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||yes||no|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes||no|
|User concepts Access control||fine grained access rights according to SQL-standard||no||OpenID Connect Discovery|
|More information provided by the system vendor|
|Typical application scenarios||As a stand-alone vector search engine, or use one of the many modules (transformers,...|
|Key customers||A ll companies that have data. |
|Licensing and pricing models||Weaviate is open-source, and free to use. We also offer Fully managed Weaviate on...|
We invite representatives of system vendors to contact us for updating and extending the system information,
|Related products and services|
|3rd parties||Instaclustr: Fully Hosted & Managed PostgreSQL|
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