DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. EDB Postgres vs. STSdb vs. XTDB
System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. EDB Postgres vs. STSdb vs. XTDB
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|Name||Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB Xexclude from comparison||EDB Postgres Xexclude from comparison||STSdb Xexclude from comparison||XTDB formerly named Crux Xexclude from comparison|
|Description||An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum||The EDB Postgres Platform is an enterprise-class data management platform based on the open source database PostgreSQL with flexible deployment options and Oracle compatibility features, complemented by tool kits for management, integration, and migration.||Key-Value Store with special method for indexing optimized for high performance using a special indexing method||A general purpose database with bitemporal SQL and Datalog and graph queries|
|Primary database model||Relational DBMS||Relational DBMS||Key-value store||Document store|
|Secondary database models||Document store|
|Developer||Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group||EnterpriseDB||STS Soft SC||Juxt Ltd.|
|Current release||14, December 2021||4.0.8, September 2015||1.19, September 2021|
|License Commercial or Open Source||commercial||commercial BSD for PostgreSQL-components||Open Source GPLv2, commercial license available||Open Source MIT License|
|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||Linux|
|Windows||All OS with a Java 8 (and higher) VM|
|Typing predefined data types such as float or date||yes||yes||yes primitive types and user defined types (classes)||yes, extensible-data-notation format|
|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.||no|
|SQL Support of SQL||yes||yes standard with numerous extensions||no||limited SQL, making use of Apache Calcite|
|APIs and other access methods||JDBC|
native C library
streaming API for large objects
|.NET Client API||HTTP REST|
|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.||no||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding Implicit feature of the cloud service||horizontal partitioning by hash, list or range||none||none|
|Replication methods Methods for redundantly storing data on multiple nodes||yes Implicit feature of the cloud service||Multi-source replication||none||yes, each node contains all data|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes, multi-version concurrency control (MVCC)||yes||yes|
|Durability Support for making data persistent||yes||yes||yes||yes, flexibel persistency by using storage technologies like Apache Kafka, RocksDB or LMDB|
|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||no|
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|Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB||EDB Postgres||STSdb||XTDB formerly named Crux|
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