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DBMS > BoltDB vs. CrateDB vs. LokiJS vs. OpenQM vs. SQL.JS

System Properties Comparison BoltDB vs. CrateDB vs. LokiJS vs. OpenQM vs. SQL.JS

Editorial information provided by DB-Engines

Name

Description

An embedded key-value store for Go.

Distributed Database based on Lucene

In-memory JavaScript DBMS

QpenQM is a high-performance, self-tuning, multi-value DBMS

Port of SQLite to JavaScript

Primary database model

Key-value store

Document store
Spatial DBMS
Search engine
Time Series DBMS
Vector DBMS

Multivalue DBMS

Relational DBMS

Secondary database models

Relational DBMS

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	0.74
Rank	#220	Overall
	#31	Key-value stores

Score	0.73
Rank	#224	Overall
	#37	Document stores
	#5	Spatial DBMS
	#16	Search engines
	#19	Time Series DBMS
	#8	Vector DBMS

Score	0.43
Rank	#264	Overall
	#42	Document stores

Score	0.27
Rank	#298	Overall
	#10	Multivalue DBMS

Score	0.53
Rank	#252	Overall
	#116	Relational DBMS

Website

github.com/boltdb/bolt

github.com/techfort/LokiJS

www.rocketsoftware.com/products/rocket-multivalue-application-development-platform/rocket-open-qm

Technical documentation

cratedb.com/docs

techfort.github.io/LokiJS

sql.js.org/documentation/index.html

Developer

Crate

Rocket Software, originally Martin Phillips

Alon Zakai

enhancements implemented by others

Initial release

2013

2013

2014

1993

2012

Current release

3.4-12

License

Commercial or Open Source

Open Source

MIT License

Open Source

Open Source

Open Source

GPLv2, extended commercial license available

Open Source

Cloud-based only

Only available as a cloud service

no

no

no

no

no

DBaaS offerings (sponsored links)

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

CrateDB Cloud: a distributed SQL database that spreads data and processing across an elastic cluster of shared nothing nodes. CrateDB Cloud enables data insights at scale on Microsoft Azure, AWS and Google Cloud Platform.

Implementation language

Go

Java

JavaScript

JavaScript

Server operating systems

BSD
Linux
OS X
Solaris
Windows

All Operating Systems, including Kubernetes with CrateDB Kubernetes Operator support

server-less, requires a JavaScript environment (browser, Node.js)

AIX
FreeBSD
Linux
macOS
Raspberry Pi
Solaris
Windows

server-less, requires a JavaScript environment (browser, Node.js)

Data scheme

schema-free

Flexible Schema (defined schema, partial schema, schema free)

schema-free

yes

with some exceptions

yes

Typing

predefined data types such as float or date

no

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

yes

no

Secondary indexes

no

yes

yes

via views

yes

SQL

Support of SQL

no

yes, but no triggers and constraints, and PostgreSQL compatibility

no

no

yes

SQL-92 is not fully supported

APIs and other access methods

ADO.NET
JDBC
ODBC
PostgreSQL wire protocol
Prometheus Remote Read/Write
RESTful HTTP API

JavaScript API

JavaScript API

Supported programming languages

Go

.NET
Erlang
Go

community maintained client
Java
JavaScript (Node.js)

community maintained client
Perl

community maintained client
PHP
Python
R
Ruby

community maintained client
Scala

community maintained client

JavaScript

.Net
Basic
C
Java
Objective C
PHP
Python

JavaScript

Server-side scripts

Stored procedures

no

user defined functions (Javascript)

View functions in JavaScript

yes

no

Triggers

no

no

yes

yes

no

Partitioning methods

Methods for storing different data on different nodes

none

Sharding

none

yes

none

Replication methods

Methods for redundantly storing data on multiple nodes

none

Configurable replication on table/partition-level

none

yes

none

MapReduce

Offers an API for user-defined Map/Reduce methods

no

no

yes

no

no

Consistency concepts

Methods to ensure consistency in a distributed system

none

Eventual Consistency
Read-after-write consistency on record level

none

Immediate Consistency

none

Foreign keys

Referential integrity

no

no

no

no

yes

Transaction concepts

Support to ensure data integrity after non-atomic manipulations of data

yes

no

unique row identifiers can be used for implementing an optimistic concurrency control strategy

no

atomic operations within a single collection possible

ACID

ACID

Concurrency

Support for concurrent manipulation of data

yes

yes

yes

Durability

Support for making data persistent

yes

yes

yes

Serialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.

yes

no

except by serializing a db to a file

In-memory capabilities

Is there an option to define some or all structures to be held in-memory only.

no

no

yes

yes

User concepts

Access control

no

rights management via user accounts

no

Access rights can be defined down to the item level

no

More information provided by the system vendor

Specific characteristics

The enterprise database for time series, documents, and vectors. Distributed - Native...
» more

Competitive advantages

Response time in milliseconds: e ven for complex ad-hoc queries. Massive scaling...
» more

Typical application scenarios

IoT: accelerate your IIoT projects with CrateDB, delivering real-time analytics...
» more

Key customers

Across all continents, CrateDB is used by companies of all sizes to meet the most...
» more

Market metrics

The CrateDB open source project was started in 2013 Honorable Mention in 2021 Gartner®...
» more

Licensing and pricing models

See CrateDB pricing >
» more

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

Related products and services

We invite representatives of vendors of related products to contact us for presenting information about their offerings here.

More resources

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