DBMS > Alibaba Cloud TSDB vs. Oracle Rdb vs. Sequoiadb
System Properties Comparison Alibaba Cloud TSDB vs. Oracle Rdb vs. Sequoiadb
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud TSDB Xexclude from comparison||Oracle Rdb Xexclude from comparison||Sequoiadb Xexclude from comparison|
|Description||A stable, reliable, and cost-effective online high-performance time series database service||NewSQL database with distributed OLTP and SQL|
|Primary database model||Time Series DBMS||Relational DBMS||Document store|
|Developer||Alibaba||Oracle, originally developed by Digital Equipment Corporation (DEC)||Sequoiadb Ltd.|
|Current release||188.8.131.52, 2021|
|License Commercial or Open Source||commercial||commercial||Open Source Server: AGPL; Client: Apache V2|
|Cloud-based only Only available as a cloud service||yes||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||HP Open VMS||Linux|
|Data scheme||schema-free||Flexible Schema (defined schema, partial schema, schema free)||schema-free|
|Typing predefined data types such as float or date||Numeric data and Strings||yes||yes oid, date, timestamp, binary, regex|
|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||no||no|
|SQL Support of SQL||no||yes||SQL-like query language|
|APIs and other access methods||HTTP REST||proprietary protocol using JSON|
|Supported programming languages||Java||.Net|
|Partitioning methods Methods for storing different data on different nodes||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication|
|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||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||yes, on a single node||Document is locked during a transaction|
|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||no|
|User concepts Access control||Access managed on TSDB instance level||simple password-based access control|
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|Alibaba Cloud TSDB||Oracle Rdb||Sequoiadb|
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