DBMS > Alibaba Cloud AnalyticDB for PostgreSQL vs. XTDB
System Properties Comparison Alibaba Cloud AnalyticDB for PostgreSQL vs. XTDB
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB Xexclude from comparison||XTDB formerly named Crux Xexclude from comparison|
|Description||An online MPP (Massively Parallel Processing) data warehousing service based on Greenplum||A general purpose database with bitemporal SQL and Datalog and graph queries|
|Primary database model||Relational DBMS||Document store|
|Developer||Alibaba / Pivotal Software Inc. / PostgreSQL Global Development Group||Juxt Ltd.|
|Current release||1.19, September 2021|
|License Commercial or Open Source||commercial||Open Source MIT License|
|Cloud-based only Only available as a cloud service||yes||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||All OS with a Java 8 (and higher) VM|
|Typing predefined data types such as float or date||yes||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||no|
|SQL Support of SQL||yes||limited SQL, making use of Apache Calcite|
|APIs and other access methods||JDBC|
|Supported programming languages||C|
|Server-side scripts Stored procedures||yes||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding Implicit feature of the cloud service||none|
|Replication methods Methods for redundantly storing data on multiple nodes||yes Implicit feature of the cloud service||yes, each node contains all data|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency|
|Foreign keys Referential integrity||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||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|
|User concepts Access control||fine grained access rights according to SQL-standard|
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|Alibaba Cloud AnalyticDB for PostgreSQL former name was HybridDB||XTDB formerly named Crux|
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