DBMS > Hawkular Metrics vs. JSqlDb vs. Lovefield vs. SAP Advantage Database Server

System Properties Comparison Hawkular Metrics vs. JSqlDb vs. Lovefield vs. SAP Advantage Database Server

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Editorial information provided by DB-Engines
Name	Hawkular Metrics  Xexclude from comparison	JSqlDb  Xexclude from comparison	Lovefield  Xexclude from comparison	SAP Advantage Database Server former name: Sybase ADS  Xexclude from comparison
		JSqlDB seems to be discontinued. Therefore it is excluded from the DB-Engines ranking.		SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
Description	Hawkular metrics is the metric storage of the Red Hat sponsored Hawkular monitoring system. It is based on Cassandra.	JavaScript Query Language Database, stores JavaScript objects and primitives	Embeddable relational database for web apps written in pure JavaScript	Low-cost RDBMS with access to ISAM and FoxPro data structures
Primary database model	Time Series DBMS	Document store Object oriented DBMS	Relational DBMS	Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.08 Rank #366   Overall #39   Time Series DBMS		Score 0.33 Rank #286   Overall #131   Relational DBMS
Website	www.hawkular.org	jsqldb.org (offline)	google.github.io/­lovefield	www.sap.com/products/advantage-database-server.html
Technical documentation	www.hawkular.org/­hawkular-metrics/­docs/­user-guide		github.com/­google/­lovefield/­blob/­master/­docs/­spec_index.md
Developer	Community supported by Red Hat	Konrad von Backstrom	Google	Sybase, SAP
Initial release	2014	2018	2014	1993
Current release		0.8, December 2018	2.1.12, February 2017
License Commercial or Open Source	Open Source Apache 2.0	Open Source	Open Source Apache 2.0	commercial
Cloud-based only Only available as a cloud service	no	no	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	Java		JavaScript
Server operating systems	Linux OS X Windows	Linux macOS Windows	server-less, requires a JavaScript environment (browser, Node.js) tested with Chrome, Firefox, IE, Safari	Linux Windows
Data scheme	schema-free	schema-free	yes	yes
Typing predefined data types such as float or date	yes	no	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	no	no
Secondary indexes	no	no	yes	yes
SQL Support of SQL	no	no	SQL-like query language via JavaScript builder pattern	yes
APIs and other access methods	HTTP REST			.NET Client API ADO.NET JDBC ODBC OLE DB
Supported programming languages	Go Java Python Ruby	JavaScript	JavaScript	Delphi Perl PHP
Server-side scripts Stored procedures	no	functions in JavaScript	no	yes
Triggers	yes via Hawkular Alerting	no	Using read-only observers	yes
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	none	none	none
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	none	none	Multi-source replication CONFLICT Trigger to resolve replication conflicts Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	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
Foreign keys Referential integrity	no	no	yes	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	yes using RocksDB	yes, by using IndexedDB or the cloud service Firebase Realtime Database	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no		yes using MemoryDB	no caching of (temporary) tables can be configured
User concepts Access control	no		no	fine grained access rights according to SQL-standard
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More resources
	Hawkular Metrics	JSqlDb	Lovefield	SAP Advantage Database Server former name: Sybase ADS
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