DBMS > EJDB vs. Newts vs. TimesTen
System Properties Comparison EJDB vs. Newts vs. TimesTen
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|Editorial information provided by DB-Engines|
|Name||EJDB Xexclude from comparison||Newts Xexclude from comparison||TimesTen Xexclude from comparison|
|Description||Embeddable document-store database library with JSON representation of queries (in MongoDB style)||Time Series DBMS based on Cassandra||In-Memory RDBMS compatible to Oracle|
|Primary database model||Document store||Time Series DBMS||Relational DBMS|
|Developer||Softmotions||OpenNMS Group||Oracle, TimesTen Performance Software, HP originally founded in HP Labs it was acquired by Oracle in 2005|
|Current release||11 Release 2 (188.8.131.52.0)|
|License Commercial or Open Source||Open Source GPLv2||Open Source Apache 2.0||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||server-less||Linux|
|Typing predefined data types such as float or date||yes string, integer, double, bool, date, object_id||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|
|SQL Support of SQL||no||no||yes|
|APIs and other access methods||in-process shared library||HTTP REST|
Oracle Call Interface (OCI)
|Supported programming languages||Actionscript|
|Server-side scripts Stored procedures||no||no||PL/SQL|
|Partitioning methods Methods for storing different data on different nodes||none||Sharding based on Cassandra||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||selectable replication factor based on Cassandra||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency based on Cassandra|
Immediate Consistency based on Cassandra
|Immediate Consistency or Eventual Consistency depending on configuration|
|Foreign keys Referential integrity||no typically not needed, however similar functionality with collection joins possible||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes Read/Write Locking||yes||yes|
|Durability Support for making data persistent||yes||yes||yes by means of logfiles and checkpoints|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||yes|
|User concepts Access control||no||no||fine grained access rights according to SQL-standard|
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