DBMS > Alibaba Cloud TSDB vs. Quasardb vs. SiteWhere
System Properties Comparison Alibaba Cloud TSDB vs. Quasardb vs. SiteWhere
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|Editorial information provided by DB-Engines|
|Name||Alibaba Cloud TSDB Xexclude from comparison||Quasardb Xexclude from comparison||SiteWhere Xexclude from comparison|
|Description||A stable, reliable, and cost-effective online high-performance time series database service||Distributed, high-performance timeseries database||M2M integration platform for persisting/querying time series data|
|Primary database model||Time Series DBMS||Time Series DBMS||Time Series DBMS|
|Current release||3.13.3, April 2022|
|License Commercial or Open Source||commercial||commercial Free community edition, Non-profit organizations and non-commercial usage are eligible for free licenses||Open Source Common Public Attribution License Version 1.0|
|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||BSD|
|Data scheme||schema-free||schema-free||predefined scheme|
|Typing predefined data types such as float or date||Numeric data and Strings||yes integer and binary||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||no||no|
|Secondary indexes||no||yes with tags||no|
|SQL Support of SQL||no||SQL-like query language||no|
|APIs and other access methods||HTTP REST||HTTP API||HTTP REST|
|Supported programming languages||Java||.Net|
|Server-side scripts Stored procedures||no||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding consistent hashing||Sharding based on HBase|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication with selectable replication factor||selectable replication factor based on HBase|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||with Hadoop integration||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||no|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes by using LevelDB||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes Transient mode||no|
|User concepts Access control||Access managed on TSDB instance level||Cryptographically strong user authentication and audit trail||Users with fine-grained authorization concept|
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|Alibaba Cloud TSDB||Quasardb||SiteWhere|
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