DBMS > Hawkular Metrics vs. JSqlDb vs. Microsoft Azure Synapse Analytics vs. Splunk

System Properties Comparison Hawkular Metrics vs. JSqlDb vs. Microsoft Azure Synapse Analytics vs. Splunk

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Editorial information provided by DB-Engines
Name	Hawkular Metrics  Xexclude from comparison	JSqlDb  Xexclude from comparison	Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse  Xexclude from comparison	Splunk  Xexclude from comparison
		JSqlDB 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	Elastic, large scale data warehouse service leveraging the broad eco-system of SQL Server	Analytics Platform for Big Data
Primary database model	Time Series DBMS	Document store Object oriented DBMS	Relational DBMS	Search engine
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.08 Rank #366   Overall #39   Time Series DBMS		Score 19.93 Rank #31   Overall #19   Relational DBMS	Score 89.10 Rank #14   Overall #2   Search engines
Website	www.hawkular.org	jsqldb.org (offline)	azure.microsoft.com/­services/­synapse-analytics	www.splunk.com
Technical documentation	www.hawkular.org/­hawkular-metrics/­docs/­user-guide		docs.microsoft.com/­azure/­synapse-analytics	docs.splunk.com/­Documentation/­Splunk
Developer	Community supported by Red Hat	Konrad von Backstrom	Microsoft	Splunk Inc.
Initial release	2014	2018	2016	2003
Current release		0.8, December 2018
License Commercial or Open Source	Open Source Apache 2.0	Open Source	commercial	commercial Limited free edition and free developer edition available
Cloud-based only Only available as a cloud service	no	no	yes	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	Java		C++
Server operating systems	Linux OS X Windows	Linux macOS Windows	hosted	Linux OS X Solaris 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	yes
Secondary indexes	no	no	yes	yes
SQL Support of SQL	no	no	yes	no Splunk Search Processing Language for search commands
APIs and other access methods	HTTP REST		ADO.NET JDBC ODBC	HTTP REST
Supported programming languages	Go Java Python Ruby	JavaScript	C# Java PHP	C# Java JavaScript PHP Python Ruby
Server-side scripts Stored procedures	no	functions in JavaScript	Transact SQL	yes
Triggers	yes via Hawkular Alerting	no	no	yes
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	none	Sharding, horizontal partitioning	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	none	yes	Multi-source replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	yes
Consistency concepts Methods to ensure consistency in a distributed system	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra		Immediate Consistency	Eventual Consistency
Foreign keys Referential integrity	no	no	no docs.microsoft.com/­en-us/­azure/­synapse-analytics/­sql-data-warehouse/­sql-data-warehouse-table-constraints	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no		ACID	no A 'Transaction' in Splunk has a different meaning: grouping related events into a single one for later searching
Concurrency Support for concurrent manipulation of data	yes		yes	yes
Durability Support for making data persistent	yes	yes using RocksDB	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no			no
User concepts Access control	no		yes	Access rights for users and roles
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More resources
	Hawkular Metrics	JSqlDb	Microsoft Azure Synapse Analytics previously named Azure SQL Data Warehouse	Splunk
DB-Engines blog posts				Enterprise Search Engines almost double their popularity in the last 12 months 2 July 2014, Paul Andlinger show all
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