DBMS > Blueflood vs. IBM Db2 Event Store vs. SAP Advantage Database Server vs. STSdb

System Properties Comparison Blueflood vs. IBM Db2 Event Store vs. SAP Advantage Database Server vs. STSdb

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Editorial information provided by DB-Engines
Name	Blueflood  Xexclude from comparison	IBM Db2 Event Store  Xexclude from comparison	SAP Advantage Database Server former name: Sybase ADS  Xexclude from comparison	STSdb  Xexclude from comparison
			SAP Advantage Database Server seems to be discontinued. Therefore it is excluded from the DB-Engines Ranking.
Description	Scalable TimeSeries DBMS based on Cassandra	Distributed Event Store optimized for Internet of Things use cases	Low-cost RDBMS with access to ISAM and FoxPro data structures	Key-Value Store with special method for indexing optimized for high performance using a special indexing method
Primary database model	Time Series DBMS	Event Store Time Series DBMS	Relational DBMS	Key-value store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.13 Rank #346   Overall #33   Time Series DBMS	Score 0.27 Rank #309   Overall #2   Event Stores #28   Time Series DBMS		Score 0.10 Rank #357   Overall #51   Key-value stores
Website	blueflood.io	www.ibm.com/­products/­db2-event-store	www.sap.com/products/advantage-database-server.html	github.com/­STSSoft/­STSdb4
Technical documentation	github.com/­rax-maas/­blueflood/­wiki	www.ibm.com/­docs/­en/­db2-event-store
Developer	Rackspace	IBM	Sybase, SAP	STS Soft SC
Initial release	2013	2017	1993	2011
Current release		2.0		4.0.8, September 2015
License Commercial or Open Source	Open Source Apache 2.0	commercial free developer edition available	commercial	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	C and C++		C#
Server operating systems	Linux OS X	Linux Linux, macOS, Windows for the developer addition	Linux Windows	Windows
Data scheme	predefined scheme	yes	yes	yes
Typing predefined data types such as float or date	yes	yes	yes	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	no
Secondary indexes	no	no	yes	no
SQL Support of SQL	no	yes through the embedded Spark runtime	yes	no
APIs and other access methods	HTTP REST	ADO.NET DB2 Connect JDBC ODBC RESTful HTTP API	.NET Client API ADO.NET JDBC ODBC OLE DB	.NET Client API
Supported programming languages		C C# C++ Cobol Delphi Fortran Go Java JavaScript (Node.js) Perl PHP Python R Ruby Scala Visual Basic	Delphi Perl PHP	C# Java
Server-side scripts Stored procedures	no	yes	yes	no
Triggers	no	no	yes	no
Partitioning methods Methods for storing different data on different nodes	Sharding based on Cassandra	Sharding	none	none
Replication methods Methods for redundantly storing data on multiple nodes	selectable replication factor based on Cassandra	Active-active shard replication	Multi-source replication CONFLICT Trigger to resolve replication conflicts Source-replica replication	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	Eventual Consistency based on Cassandra Immediate Consistency based on Cassandra	Eventual Consistency	Immediate Consistency
Foreign keys Referential integrity	no	no	yes	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no	ACID	no
Concurrency Support for concurrent manipulation of data	yes	No - written data is immutable	yes	yes
Durability Support for making data persistent	yes	Yes - Synchronous writes to local disk combined with replication and asynchronous writes in parquet format to permanent shared storage	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes	no caching of (temporary) tables can be configured
User concepts Access control	no	fine grained access rights according to SQL-standard	fine grained access rights according to SQL-standard	no
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More resources
	Blueflood	IBM Db2 Event Store	SAP Advantage Database Server former name: Sybase ADS	STSdb
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