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DBMS > Alibaba Cloud TSDB vs. Amazon CloudSearch vs. Amazon SimpleDB vs. VelocityDB

System Properties Comparison Alibaba Cloud TSDB vs. Amazon CloudSearch vs. Amazon SimpleDB vs. VelocityDB

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Editorial information provided by DB-Engines
NameAlibaba Cloud TSDB  Xexclude from comparisonAmazon CloudSearch  Xexclude from comparisonAmazon SimpleDB  Xexclude from comparisonVelocityDB  Xexclude from comparison
DescriptionA stable, reliable, and cost-effective online high-performance time series database serviceA hosted search engine service by Amazon with the data stored in Amazons cloudHosted 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)
Primary database modelTime Series DBMSSearch engineKey-value storeGraph DBMS
Object oriented DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.24
Rank#312  Overall
#27  Time Series DBMS
Score1.87
Rank#140  Overall
#12  Search engines
Score1.88
Rank#139  Overall
#24  Key-value stores
Score0.11
Rank#347  Overall
#35  Graph DBMS
#15  Object oriented DBMS
Websitewww.alibabacloud.com/­product/­hitsdbaws.amazon.com/­cloudsearchaws.amazon.com/­simpledbvelocitydb.com
Technical documentationwww.alibabacloud.com/­help/­en/­time-series-database/­latest/­what-is-tsdbdocs.aws.amazon.com/­cloudsearchdocs.aws.amazon.com/­simpledbvelocitydb.com/­UserGuide
DeveloperAlibabaAmazonAmazonVelocityDB Inc
Initial release201220072011
Current release7.x
License infoCommercial or Open Sourcecommercialcommercialcommercialcommercial
Cloud-based only infoOnly available as a cloud serviceyesyesyesno
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageC#
Server operating systemshostedhostedhostedAny that supports .NET
Data schemeschema-freeyesschema-freeyes
Typing infopredefined data types such as float or dateNumeric data and Stringsyesnoyes
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
Secondary indexesnoyes infoall search fields are automatically indexedyes infoAll columns are indexed automaticallyyes
SQL infoSupport of SQLnononono
APIs and other access methodsHTTP RESTHTTP APIRESTful HTTP API.Net
Supported programming languagesJava.Net
C
C++
Erlang
Java
PHP
Python
Ruby
Scala
.Net
Server-side scripts infoStored proceduresnononono
TriggersnononoCallbacks are triggered when data changes
Partitioning methods infoMethods for storing different data on different nodesyes infoautomatic partitioning across Amazon Search Instance as requirednone infoSharding must be implemented in the applicationSharding
Replication methods infoMethods for redundantly storing data on multiple nodesyes infomanaged transparently by AWSyes
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate ConsistencyEventual Consistency
Immediate Consistency infocan be specified for read operations
Immediate Consistency
Foreign keys infoReferential integritynononono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanonono infoConcurrent data updates can be detected by the applicationACID
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.noyes
User concepts infoAccess controlAccess managed on TSDB instance levelauthentication via encrypted signaturesAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)Based on Windows Authentication

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More resources
Alibaba Cloud TSDBAmazon CloudSearchAmazon SimpleDBVelocityDB
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