DBMS > Alibaba Cloud HybridDB vs. GBase vs. PostgreSQL vs. RavenDB
System Properties Comparison Alibaba Cloud HybridDB vs. GBase vs. PostgreSQL vs. RavenDB
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud HybridDB Xexclude from comparison||GBase Xexclude from comparison||PostgreSQL Xexclude from comparison||RavenDB Xexclude from comparison|
|GBase seems to be discontinued and will be removed from the DB-Engines ranking|
|Description||HybridDB is an online MPP (Massively Parallel Processing) data warehousing service based on Greenplum||An analytical database for business intelligence with large customers in China.||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||Open Source Operational and Transactional Enterprise NoSQL Document Database|
|Primary database model||Relational DBMS||Relational DBMS||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Document store|
|Secondary database models||Document store||Graph DBMS experimental|
|Developer||Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group||PostgreSQL Global Development Group www.postgresql.org/developer||Hibernating Rhinos|
|Initial release||2016||1989 1989: Postgres, 1996: PostgreSQL||2010|
|Current release||GBase 8a||12.1, November 2019||4.2, May 2019|
|License Commercial or Open Source||commercial||commercial||Open Source BSD||Open Source AGPL version 3, commercial license available|
|Cloud-based only Only available as a cloud service||yes||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||FreeBSD|
|Typing predefined data types such as float or date||yes||yes||no|
|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||yes specific XML-type available, but no XML query functionality.|
|SQL Support of SQL||yes||yes standard with numerous extensions||SQL-like query language (RQL)|
|APIs and other access methods||JDBC|
native C library
streaming API for large objects
|.NET Client API|
Java Client API
Python Client API
RESTful HTTP API
|Supported programming languages||C|
|Server-side scripts Stored procedures||yes||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||yes|
|Partitioning methods Methods for storing different data on different nodes||Sharding Implicit feature of the cloud service||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||yes Implicit feature of the cloud service||Master-slave replication other methods possible by using 3rd party extensions||Multi-master replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||yes MapReduce functions can be defined in Linq|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||yes||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||ACID, Cluster-wide transaction available|
|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||no|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||Access control on document level using the Authorization Bundle|
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|Alibaba Cloud HybridDB||GBase||PostgreSQL||RavenDB|
|DB-Engines blog posts|
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|Conferences and events|
PGCon 2020, PostgreSQL Conference for Users and Developers
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