DBMS > Alibaba Cloud MaxCompute vs. Citus
System Properties Comparison Alibaba Cloud MaxCompute vs. Citus
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud MaxCompute Xexclude from comparison||Citus Xexclude from comparison|
|Description||MaxCompute (previously known as ODPS) is a general purpose, fully managed, multi-tenancy data processing platform for large-scale data warehousing||Scalable hybrid operational and analytics RDBMS for big data use cases based on PostgreSQL|
|Primary database model||Relational DBMS a graph-processing framework is available with the graphs being stored in tables||Relational DBMS|
|Secondary database models||Document store|
|Current release||8.1, December 2018|
|License Commercial or Open Source||commercial||Open Source AGPL, commercial license also available|
|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||Linux|
|Typing predefined data types such as float or date||yes||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.||no||yes specific XML type available, but no XML query functionality|
|SQL Support of SQL||SQL-like query language||yes standard, with numerous extensions|
|APIs and other access methods||Fluentd|
|native C library|
streaming API for large objects
|Supported programming languages||Java||.Net|
|Server-side scripts Stored procedures||user defined functions in Java||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.|
|Partitioning methods Methods for storing different data on different nodes||Sharding Implicit feature of the cloud service||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|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||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||Access rights for users and roles||fine grained access rights according to SQL-standard|
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|Alibaba Cloud MaxCompute||Citus|
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