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DBMS > Amazon SimpleDB vs. etcd vs. Realm

System Properties Comparison Amazon SimpleDB vs. etcd vs. Realm

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Editorial information provided by DB-Engines
NameAmazon SimpleDB  Xexclude from comparisonetcd  Xexclude from comparisonRealm  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 distributed reliable key-value storeA DBMS built for use on mobile devices that’s a fast, easy to use alternative to SQLite and Core Data
Primary database modelKey-value storeKey-value storeDocument store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score2.18
Rank#117  Overall
#22  Key-value stores
Score10.32
Rank#46  Overall
#5  Key-value stores
Score9.51
Rank#50  Overall
#8  Document stores
Websiteaws.amazon.com/­simpledbetcd.io
github.com/­etcd-io/­etcd
realm.io
Technical documentationdocs.aws.amazon.com/­simpledbetcd.io/­docs
github.com/­etcd-io/­etcd/­tree/­master/­Documentation
realm.io/­docs
DeveloperAmazonRealm, acquired by MongoDB in May 2019
Initial release20072014
Current release3.4, August 2019
License infoCommercial or Open SourcecommercialOpen Source infoApache Version 2.0Open Source
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 languageGo
Server operating systemshostedFreeBSD
Linux
Windows infoexperimental
Android
Backend: server-less
iOS
Windows
Data schemeschema-freeschema-freeyes
Typing infopredefined data types such as float or datenonoyes
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 indexesyes infoAll columns are indexed automaticallynoyes
SQL infoSupport of SQLnonono
APIs and other access methodsRESTful HTTP APIgRPC
JSON over HTTP
Supported programming languages.Net
C
C++
Erlang
Java
PHP
Python
Ruby
Scala
.Net
C
C++
Clojure
Erlang
Go
Haskell
Java
JavaScript (Node.js)
Perl
PHP
Python
R
Ruby
Rust
Scala
Tcl
.Net
Java infowith Android only
Objective-C
React Native
Swift
Server-side scripts infoStored proceduresnonono inforuns within the applications so server-side scripts are unnecessary
Triggersnoyes, watching key changesyes infoChange Listeners
Partitioning methods infoMethods for storing different data on different nodesnone infoSharding must be implemented in the applicationnone
Replication methods infoMethods for redundantly storing data on multiple nodesyesUsing Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.none
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency infocan be specified for read operations
Immediate ConsistencyImmediate Consistency
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 applicationnoACID
Concurrency infoSupport for concurrent manipulation of datayesyes
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.noyes infoIn-Memory realm
User concepts infoAccess controlAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)noyes
More information provided by the system vendor
Amazon SimpleDBetcdRealm
Specific characteristicsNow a part of MongoDB Data Platform , Realm Database is the fast, easy to use, and...
» more
Competitive advantagesRealm ensures offline-first functionality, meaning apps run smoothly and deliver...
» more
Typical application scenariosMobile Consumer Apps First-Line Worker Apps
» more
Key customersCathay Pacific Royal Carribbean Cruise Lines Open Source Database powers apps built...
» more
Market metricsUsed by 100,000+ developers 2 bn installs Currently used in 40k+ applications in...
» more
Licensing and pricing modelsRealm database is licensed under the Apache License v2.0.
» more

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and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

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More resources
Amazon SimpleDBetcdRealm
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Recent citations in the news

Introducing Amazon SimpleDB
18 August 2010, Database Journal

Amazon SimpleDB overview
14 June 2015, TechTarget

How to weigh Amazon DynamoDB vs. SimpleDB
27 June 2014, TechTarget

Amazon DynamoDB Serves Trillions Of Requests Per Month While Counterpart SimpleDB Is No Longer A Listed Product On AWS
13 November 2013, TechCrunch

AWS, Microsoft and Google should retire these cloud services
2 June 2020, TechTarget

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All about performance: etcd 3.5 looks to make Kubernetes users happy • DEVCLASS
17 June 2021, DevClass

Distributed Key-Value Store etcd Graduates at CNCF
29 November 2020, InfoQ.com

Kubernetes hardening: Drilling down on the NSA/CISA guidance
23 August 2021, CSO Online

A Kubernetes Operator for etcd
13 October 2020, InfoQ.com

What you don't know about working on AWS
27 August 2021, Floridanewstimes.com

provided by Google News

On Point: Q&A with Lewis Shepherd | SIGNAL Magazine
1 June 2021, Signal Magazine

MongoDB Cloud brings developers and edge together
10 June 2020, Techradar

MongoDB Extends Cloud Lineup With New Database Release, Search And Mobile Tools
12 June 2020, CRN: Technology news for channel partners and solution providers

Realm Makes PostgreSQL Real-Time with New Connector
21 March 2017, Database Trends and Applications

MongoDB Cloud Gives Developers An Escape From Data Silos With First-Ever Unified Cloud-To-Mobile Experience
9 June 2020, PRNewswire

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