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DBMS > Blueflood vs. HarperDB vs. RocksDB vs. SAP SQL Anywhere vs. VelocityDB

System Properties Comparison Blueflood vs. HarperDB vs. RocksDB vs. SAP SQL Anywhere vs. VelocityDB

Editorial information provided by DB-Engines
NameBlueflood  Xexclude from comparisonHarperDB  Xexclude from comparisonRocksDB  Xexclude from comparisonSAP SQL Anywhere infoformerly called Adaptive Server Anywhere  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionScalable TimeSeries DBMS based on CassandraUltra-low latency distributed database with an intuitive REST API supporting NoSQL and SQL (including joins). Deployment of functions and databases simultaneously with a consolidated node-level architecture.Embeddable persistent key-value store optimized for fast storage (flash and RAM)RDBMS database and synchronization technologies for server, desktop, remote office, and mobile environmentsA .NET Object Database that can be embedded/distributed and extended to a graph data model (VelocityGraph)
Primary database modelTime Series DBMSDocument storeKey-value storeRelational DBMSGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.06
Rank#353  Overall
#34  Time Series DBMS
Score0.55
Rank#248  Overall
#38  Document stores
Score3.65
Rank#85  Overall
#11  Key-value stores
Score4.25
Rank#79  Overall
#43  Relational DBMS
Score0.05
Rank#358  Overall
#36  Graph DBMS
#16  Object oriented DBMS
Websiteblueflood.iowww.harperdb.iorocksdb.orgwww.sap.com/­products/­technology-platform/­sql-anywhere.htmlvelocitydb.com
Technical documentationgithub.com/­rax-maas/­blueflood/­wikidocs.harperdb.io/­docsgithub.com/­facebook/­rocksdb/­wikihelp.sap.com/­docs/­SAP_SQL_Anywherevelocitydb.com/­UserGuide
DeveloperRackspaceHarperDBFacebook, Inc.SAP infoformerly SybaseVelocityDB Inc
Initial release20132017201319922011
Current release3.1, August 20218.11.4, April 202417, July 20157.x
License infoCommercial or Open SourceOpen Source infoApache 2.0commercial infofree community edition availableOpen Source infoBSDcommercialcommercial
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaNode.jsC++C#
Server operating systemsLinux
OS X
Linux
OS X
LinuxAIX
HP-UX
Linux
OS X
Solaris
Windows
Any that supports .NET
Data schemepredefined schemedynamic schemaschema-freeyesyes
Typing infopredefined data types such as float or dateyesyes infoJSON data typesnoyesyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nononoyesno
Secondary indexesnoyesnoyesyes
SQL infoSupport of SQLnoSQL-like data manipulation statementsnoyesno
APIs and other access methodsHTTP RESTJDBC
ODBC
React Hooks
RESTful HTTP/JSON API
WebSocket
C++ API
Java API
ADO.NET
HTTP API
JDBC
ODBC
.Net
Supported programming languages.Net
C
C#
C++
ColdFusion
D
Dart
Delphi
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Lisp
MatLab
Objective C
Perl
PHP
PowerShell
Prolog
Python
R
Ruby
Rust
Scala
Swift
C
C++
Go
Java
Perl
Python
Ruby
C
C#
C++
Delphi
Java
JavaScript (Node.js)
Perl
PHP
Python
Ruby
.Net
Server-side scripts infoStored proceduresnoCustom Functions infosince release 3.1noyes, in C/C++, Java, .Net or Perlno
TriggersnonoyesCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on CassandraA table resides as a whole on one (or more) nodes in a clusterhorizontal partitioningnoneSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on Cassandrayes infothe nodes on which a table resides can be definedyesSource-replica replication infoDatabase mirroring
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Immediate ConsistencyImmediate ConsistencyImmediate Consistency
Foreign keys infoReferential integritynononoyesno
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoAtomic execution of specific operationsyesACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyesyes, using LMDByesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyesyesyes
User concepts infoAccess controlnoAccess rights for users and rolesnofine grained access rights according to SQL-standardBased on Windows Authentication

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3rd partiesSpeedb: A high performance RocksDB-compliant key-value store optimized for write-intensive workloads.
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More resources
BluefloodHarperDBRocksDBSAP SQL Anywhere infoformerly called Adaptive Server AnywhereVelocityDB
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