DBMS > LevelDB vs. Quasardb vs. SpatiaLite

System Properties Comparison LevelDB vs. Quasardb vs. SpatiaLite

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Editorial information provided by DB-Engines
Name	LevelDB  Xexclude from comparison	Quasardb  Xexclude from comparison	SpatiaLite  Xexclude from comparison
Description	Embeddable fast key-value storage library that provides an ordered mapping from string keys to string values	Distributed, high-performance timeseries database	Spatial extension of SQLite
Primary database model	Key-value store	Time Series DBMS	Spatial DBMS
Secondary database models			Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 3.03 Rank #101   Overall #19   Key-value stores	Score 0.07 Rank #329   Overall #29   Time Series DBMS	Score 1.94 Rank #126   Overall #2   Spatial DBMS
Website	github.com/­google/­leveldb	quasardb.net	www.gaia-gis.it/­fossil/­libspatialite/­index
Technical documentation	github.com/­google/­leveldb/­blob/­master/­doc/­index.md	doc.quasar.ai/­master	www.gaia-gis.it/­gaia-sins/­spatialite_topics.html
Developer	Google	quasardb	Alessandro Furieri
Initial release	2011	2009	2008
Current release	1.23, February 2021	3.13.3, April 2022	5.0.0, August 2020
License Commercial or Open Source	Open Source BSD	commercial Free community edition, Non-profit organizations and non-commercial usage are eligible for free licenses	Open Source MPL 1.1, GPL v2.0 or LGPL v2.1
Cloud-based only Only available as a cloud service	no	no	no
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Implementation language	C++	C++	C++
Server operating systems	Illumos Linux OS X Windows	BSD Linux OS X Windows	server-less
Data scheme	schema-free	schema-free	yes
Typing predefined data types such as float or date	no	yes integer and binary	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	no	yes with tags	yes
SQL Support of SQL	no	SQL-like query language	yes
APIs and other access methods		HTTP API
Supported programming languages	C++ Go Java 3rd party binding JavaScript (Node.js) 3rd party binding Python 3rd party binding	.Net C C# C++ Go Java JavaScript (Node.js) PHP Python R
Server-side scripts Stored procedures	no	no	no
Triggers	no	no	yes
Partitioning methods Methods for storing different data on different nodes	none	Sharding consistent hashing	none
Replication methods Methods for redundantly storing data on multiple nodes	none	Source-replica replication with selectable replication factor	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	with Hadoop integration	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	yes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	ACID	ACID
Concurrency Support for concurrent manipulation of data	yes	yes	yes
Durability Support for making data persistent	yes with automatic compression on writes	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	yes
User concepts Access control	no	Cryptographically strong user authentication and audit trail	no
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	LevelDB	Quasardb	SpatiaLite
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