DBMS > EsgynDB vs. LokiJS vs. SpaceTime

System Properties Comparison EsgynDB vs. LokiJS vs. SpaceTime

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Editorial information provided by DB-Engines
Name	EsgynDB  Xexclude from comparison	LokiJS  Xexclude from comparison	SpaceTime  Xexclude from comparison
Description	Enterprise-class SQL-on-Hadoop solution, powered by Apache Trafodion	In-memory JavaScript DBMS	SpaceTime is a spatio-temporal DBMS with a focus on performance.
Primary database model	Relational DBMS	Document store	Spatial DBMS
Secondary database models			Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.19 Rank #292   Overall #137   Relational DBMS	Score 0.57 Rank #226   Overall #34   Document stores	Score 0.00 Rank #363   Overall #5   Spatial DBMS
Website	www.esgyn.cn	github.com/­techfort/­LokiJS	www.mireo.hr/­spacetime
Technical documentation		techfort.github.io/­LokiJS
Developer	Esgyn		Mireo
Initial release	2015	2014	2020
License Commercial or Open Source	commercial	Open Source	commercial
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	C++, Java	JavaScript	C++
Server operating systems	Linux	server-less, requires a JavaScript environment (browser, Node.js)	Linux
Data scheme	yes	schema-free	yes
Typing predefined data types such as float or date	yes	no	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	yes	yes via views	no
SQL Support of SQL	yes	no	A subset of ANSI SQL is implemented
APIs and other access methods	ADO.NET JDBC ODBC	JavaScript API	RESTful HTTP API
Supported programming languages	All languages supporting JDBC/ODBC/ADO.Net	JavaScript	C# C++ Python
Server-side scripts Stored procedures	Java Stored Procedures	View functions in JavaScript	no
Triggers	no	yes	no
Partitioning methods Methods for storing different data on different nodes	Sharding	none	Fixed-grid hypercubes
Replication methods Methods for redundantly storing data on multiple nodes	Multi-source replication between multi datacenters	none	Real-time block device replication (DRBD)
MapReduce Offers an API for user-defined Map/Reduce methods	yes	yes	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	none	Immediate Consistency
Foreign keys Referential integrity	yes	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	no atomic operations within a single collection possible	no
Concurrency Support for concurrent manipulation of data	yes		yes
Durability Support for making data persistent	yes	yes Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes	no
User concepts Access control	fine grained access rights according to SQL-standard	no	yes
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	EsgynDB	LokiJS	SpaceTime
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