DBMS > IBM Db2 Event Store vs. LokiJS
System Properties Comparison IBM Db2 Event Store vs. LokiJS
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|Editorial information provided by DB-Engines|
|Name||IBM Db2 Event Store Xexclude from comparison||LokiJS Xexclude from comparison|
|Primary database model||Event Store|
Time Series DBMS
|License Commercial or Open Source||commercial free developer edition available||Open Source|
|Cloud-based only Only available as a cloud service||no||no|
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|Typing predefined data types such as float or date||yes||no|
|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||no||yes via views|
|SQL Support of SQL||yes through the embedded Spark runtime||no|
|APIs and other access methods||ADO.NET|
RESTful HTTP API
|Supported programming languages||C|
|Partitioning methods Methods for storing different data on different nodes||Sharding||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Active-active shard replication||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency||none|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no atomic operations within a single collection possible|
|Concurrency Support for concurrent manipulation of data||No - written data is immutable|
|Durability Support for making data persistent||Yes - Synchronous writes to local disk combined with replication and asynchronous writes in parquet format to permanent shared storage||yes Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||no|
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|IBM Db2 Event Store||LokiJS|
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