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DBMS > LevelDB vs. QuestDB vs. SAP SQL Anywhere vs. VelocityDB vs. XAP

System Properties Comparison LevelDB vs. QuestDB vs. SAP SQL Anywhere vs. VelocityDB vs. XAP

Editorial information provided by DB-Engines
NameLevelDB  Xexclude from comparisonQuestDB  Xexclude from comparisonSAP SQL Anywhere infoformerly called Adaptive Server Anywhere  Xexclude from comparisonVelocityDB  Xexclude from comparisonXAP  Xexclude from comparison
DescriptionEmbeddable fast key-value storage library that provides an ordered mapping from string keys to string valuesA high performance, low latency Time Series DBMSRDBMS 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)High performant in-memory data grid for mission critical applications. Insight Edge from the same company extends XAP for AI/ML support, BI and other interfaces
Primary database modelKey-value storeTime Series DBMSRelational DBMSGraph DBMS
Object oriented DBMS
Document store
Key-value store infoValues are user defined objects
Secondary database modelsRelational DBMSObject oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.88
Rank#88  Overall
#16  Key-value stores
Score0.17
Rank#266  Overall
#20  Time Series DBMS
Score5.50
Rank#58  Overall
#32  Relational DBMS
Score0.07
Rank#295  Overall
#27  Graph DBMS
#16  Object oriented DBMS
Score0.82
Rank#164  Overall
#25  Document stores
#30  Key-value stores
Websitegithub.com/­google/­leveldbwww.questdb.iowww.sap.com/­products/­sql-anywhere.htmlvelocitydb.comwww.gigaspaces.com/­products/­xap
Technical documentationgithub.com/­google/­leveldb/­blob/­master/­doc/­index.mdwww.questdb.io/­docs/­docstructurehelp.sap.com/­sql-anywherevelocitydb.com/­UserGuidedocs.gigaspaces.com/­latest/­landing.html
DeveloperGoogleQuestDB LimitedSAP infoformerly SybaseVelocityDB IncGigaspaces Technologies
Initial release20112014199220112000
Current release1.22, May 201917, July 20157.x14.5.0, June 2019
License infoCommercial or Open SourceOpen Source infoBSDOpen Source infoAGPL 3.0commercialcommercialOpen Source infoApache Version 2; Commercial licenses available
Cloud-based only infoOnly available as a cloud servicenonononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageC++JavaC#Java, C++, .Net
Server operating systemsIllumos
Linux
OS X
Windows
Linux
macOS
Windows
AIX
HP-UX
Linux
OS X
Solaris
Windows
Any that supports .NETLinux
macOS
Solaris
Windows
Data schemeschema-freeyesyesyesschema-free
Typing infopredefined data types such as float or datenoyesyesyesyes
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.nonoyesnono infoXML can be used for describing objects metadata
Secondary indexesnonoyesyesyes
SQL infoSupport of SQLnoSQL-like query languageyesnoSQL-like query language and DML statements
APIs and other access methodsHTTP RESTADO.NET
HTTP API
JDBC
ODBC
.NetGigaSpaces LRMI
Hibernate
JCache
JDBC
JPA
ODBC
RESTful HTTP API
Spring Data
Supported programming languagesC++
Go
Java info3rd party binding
JavaScript (Node.js) info3rd party binding
Python info3rd party binding
JavaC
C#
C++
Delphi
Java
JavaScript (Node.js)
Perl
PHP
Python
Ruby
.Net.Net
C++
Java
Server-side scripts infoStored proceduresnonoyes, in C/C++, Java, .Net or Perlnoyes
TriggersnonoyesCallbacks are triggered when data changesyes infoEvent Listeners
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioning (by timestamps)noneShardingSharding infoHash based
Replication methods infoMethods for redundantly storing data on multiple nodesnonenoneMaster-slave replication infoDatabase mirroringMaster-master replication infosynchronous or asynchronous
Master-slave replication infosynchronous or asynchronous
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonononoyes infoMap-Reduce pattern can be built with XAP task executors
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate ConsistencyImmediate Consistency infoConsistency level configurable: ALL, QUORUM, ANY
Foreign keys infoReferential integritynonoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACID for single-table writesACIDACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyesyes
Durability infoSupport for making data persistentyes infowith automatic compression on writesyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyesyesyes
User concepts infoAccess controlnofine grained access rights according to SQL-standardBased on Windows AuthenticationRole-based access control

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More resources
LevelDBQuestDBSAP SQL Anywhere infoformerly called Adaptive Server AnywhereVelocityDBXAP
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