DBMS > Quasardb vs. Sequoiadb
System Properties Comparison Quasardb vs. Sequoiadb
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|Editorial information provided by DB-Engines|
|Name||Quasardb Xexclude from comparison||Sequoiadb Xexclude from comparison|
|Description||Distributed, high-performance timeseries database||NewSQL database with distributed OLTP and SQL|
|Primary database model||Time Series DBMS||Document store|
|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 Server: AGPL; Client: Apache V2|
|Cloud-based only Only available as a cloud service||no||no|
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|Server operating systems||BSD|
|Typing predefined data types such as float or date||yes integer and binary||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|
|Secondary indexes||yes with tags||yes|
|SQL Support of SQL||SQL-like query language||SQL-like query language|
|APIs and other access methods||HTTP API||proprietary protocol using JSON|
|Supported programming languages||.Net|
|Partitioning methods Methods for storing different data on different nodes||Sharding consistent hashing||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication with selectable replication factor||Source-replica replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||with Hadoop integration||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||Document is locked during a transaction|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes by using LevelDB||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes Transient mode||no|
|User concepts Access control||Cryptographically strong user authentication and audit trail||simple password-based access control|
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