DBMS > Adabas vs. Datomic vs. Sphinx vs. STSdb

System Properties Comparison Adabas vs. Datomic vs. Sphinx vs. STSdb

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Editorial information provided by DB-Engines
Name	Adabas denotes "adaptable data base"  Xexclude from comparison	Datomic  Xexclude from comparison	Sphinx  Xexclude from comparison	STSdb  Xexclude from comparison
Description	OLTP - DBMS for mainframes and Linux/Unix/Windows environments used typically together with the Natural programming platform	Datomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durability	Open source search engine for searching in data from different sources, e.g. relational databases	Key-Value Store with special method for indexing optimized for high performance using a special indexing method
Primary database model	Multivalue DBMS	Relational DBMS	Search engine	Key-value store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 4.89 Rank #79   Overall #1   Multivalue DBMS	Score 1.73 Rank #135   Overall #67   Relational DBMS	Score 7.23 Rank #61   Overall #8   Search engines	Score 0.01 Rank #359   Overall #56   Key-value stores
Website	www.softwareag.com/­en_corporate/­platform/­adabas-natural.html	www.datomic.com	sphinxsearch.com	github.com/­STSSoft/­STSdb4
Technical documentation		docs.datomic.com	sphinxsearch.com/­docs
Developer	Software AG	Cognitect	Sphinx Technologies Inc.	STS Soft SC
Initial release	1971	2012	2001	2011
Current release		1.0.6362, January 2022	3.4.1, July 2021	4.0.8, September 2015
License Commercial or Open Source	commercial	commercial limited edition free	Open Source GPL version 2, commercial licence available	Open Source GPLv2, commercial license available
Cloud-based only Only available as a cloud service	no	no	no	no
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Implementation language		Java, Clojure	C++	C#
Server operating systems	BS2000 Linux Unix Windows z/OS z/VSE	All OS with a Java VM	FreeBSD Linux NetBSD OS X Solaris Windows	Windows
Data scheme	yes	yes	yes	yes
Typing predefined data types such as float or date	yes	yes	no	yes primitive types and user defined types (classes)
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
Secondary indexes	yes	yes	yes full-text index on all search fields	no
SQL Support of SQL	yes with add-on product Adabas SQL Gateway	no	SQL-like query language (SphinxQL)	no
APIs and other access methods	HTTP API with add-on software Adabas SOA Gateway SOAP-based API with add-on software Adabas SOA Gateway	RESTful HTTP API	Proprietary protocol	.NET Client API
Supported programming languages	Natural	Clojure Java	C++ unofficial client library Java Perl unofficial client library PHP Python Ruby unofficial client library	C# Java
Server-side scripts Stored procedures	in Natural	yes Transaction Functions	no	no
Triggers	no	By using transaction functions	no	no
Partitioning methods Methods for storing different data on different nodes	yes, with additonal products like Adabas Cluster Services, Adabas Parallel Services, Adabas Vista	none But extensive use of caching in the application peers	Sharding Partitioning is done manually, search queries against distributed index is supported	none
Replication methods Methods for redundantly storing data on multiple nodes	yes, with add-on product Event Replicator	none But extensive use of caching in the application peers	none	none
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	ACID	ACID	no	no
Concurrency Support for concurrent manipulation of data	yes	yes	yes	yes
Durability Support for making data persistent	yes	yes using external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)	yes The original contents of fields are not stored in the Sphinx index.	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes recommended only for testing and development
User concepts Access control	only with OS-specific tools (e.g. IBM RACF, CA Top Secret)	no	no	no
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More resources
	Adabas denotes "adaptable data base"	Datomic	Sphinx	STSdb
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