DBMS > Quasardb vs. SiteWhere vs. Teradata Aster
System Properties Comparison Quasardb vs. SiteWhere vs. Teradata Aster
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|Editorial information provided by DB-Engines|
|Name||Quasardb Xexclude from comparison||SiteWhere Xexclude from comparison||Teradata Aster Xexclude from comparison|
|Teradata Aster has been integrated into other Teradata systems and therefore will be removed from the DB-Engines ranking.|
|Description||Distributed, high-performance timeseries database||M2M integration platform for persisting/querying time series data||Platform for big data analytics on multistructured data sources and types|
|Primary database model||Time Series DBMS||Time Series DBMS||Relational DBMS|
|Current release||3.13.3, April 2022|
|License Commercial or Open Source||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||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||BSD|
|Data scheme||schema-free||predefined scheme||Flexible Schema (defined schema, partial schema, schema free) defined schema within the relational store; partial schema or schema free in the Aster File Store|
|Typing predefined data types such as float or date||yes integer and binary||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||no||yes in Aster File Store|
|Secondary indexes||yes with tags||no||yes|
|SQL Support of SQL||SQL-like query language||no||yes|
|APIs and other access methods||HTTP API||HTTP REST||ADO.NET|
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||R packages|
|Partitioning methods Methods for storing different data on different nodes||Sharding consistent hashing||Sharding based on HBase||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication with selectable replication factor||selectable replication factor based on HBase||yes Dimension tables are replicated across all nodes in the cluster. The number of replicas for the file store can be configured.|
|MapReduce Offers an API for user-defined Map/Reduce methods||with Hadoop integration||no||yes SQL Map-Reduce Framework|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency or Eventual Consistency depending on configuration|
|Foreign keys Referential integrity||no||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes by using LevelDB||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes Transient mode||no||no|
|User concepts Access control||Cryptographically strong user authentication and audit trail||Users with fine-grained authorization concept||fine grained access rights according to SQL-standard|
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