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DBMS > Amazon SimpleDB vs. VelocityDB vs. XAP

System Properties Comparison Amazon SimpleDB vs. VelocityDB vs. XAP

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Editorial information provided by DB-Engines
NameAmazon SimpleDB  Xexclude from comparisonVelocityDB  Xexclude from comparisonXAP  Xexclude from comparison
DescriptionHosted simple database service by Amazon, with the data stored in the Amazon Cloud. infoThere is an unrelated product called SimpleDB developed by Edward ScioreA .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 storeGraph DBMS
Object oriented DBMS
Document store
Key-value store infoValues are user defined objects
Secondary database modelsObject oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.43
Rank#107  Overall
#22  Key-value stores
Score0.08
Rank#299  Overall
#28  Graph DBMS
#16  Object oriented DBMS
Score0.92
Rank#166  Overall
#25  Document stores
#30  Key-value stores
Websiteaws.amazon.com/­simpledbvelocitydb.comwww.gigaspaces.com/­products/­xap
Technical documentationdocs.aws.amazon.com/­simpledbvelocitydb.com/­UserGuidedocs.gigaspaces.com/­latest/­landing.html
DeveloperAmazonVelocityDB IncGigaspaces Technologies
Initial release200720112000
Current release7.x14.5.0, June 2019
License infoCommercial or Open SourcecommercialcommercialOpen Source infoApache Version 2; Commercial licenses available
Cloud-based only infoOnly available as a cloud serviceyesnono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC#Java, C++, .Net
Server operating systemshostedAny that supports .NETLinux
macOS
Solaris
Windows
Data schemeschema-freeyesschema-free
Typing infopredefined data types such as float or datenoyesyes
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.nono infoXML can be used for describing objects metadata
Secondary indexesyes infoAll columns are indexed automaticallyyesyes
SQL infoSupport of SQLnonoSQL-like query language and DML statements
APIs and other access methodsRESTful HTTP API.NetGigaSpaces LRMI
Hibernate
JCache
JDBC
JPA
ODBC
RESTful HTTP API
Spring Data
Supported programming languages.Net
C
C++
Erlang
Java
PHP
Python
Ruby
Scala
.Net.Net
C++
Java
Server-side scripts infoStored proceduresnonoyes
TriggersnoCallbacks are triggered when data changesyes infoEvent Listeners
Partitioning methods infoMethods for storing different data on different nodesnone infoSharding must be implemented in the applicationShardingSharding infoHash based
Replication methods infoMethods for redundantly storing data on multiple nodesyesMaster-master replication infosynchronous or asynchronous
Master-slave replication infosynchronous or asynchronous
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonoyes infoMap-Reduce pattern can be built with XAP task executors
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be specified for read operations
Immediate ConsistencyImmediate Consistency infoConsistency level configurable: ALL, QUORUM, ANY
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datano infoConcurrent data updates can be detected by the applicationACIDACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyes
User concepts infoAccess controlAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)Based on Windows AuthenticationRole-based access control

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More resources
Amazon SimpleDBVelocityDBXAP
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