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DBMS > AlaSQL vs. Amazon SimpleDB vs. EJDB vs. LokiJS vs. OpenTSDB

System Properties Comparison AlaSQL vs. Amazon SimpleDB vs. EJDB vs. LokiJS vs. OpenTSDB

Editorial information provided by DB-Engines
NameAlaSQL  Xexclude from comparisonAmazon SimpleDB  Xexclude from comparisonEJDB  Xexclude from comparisonLokiJS  Xexclude from comparisonOpenTSDB  Xexclude from comparison
DescriptionJavaScript DBMS libraryHosted simple database service by Amazon, with the data stored in the Amazon Cloud. infoThere is an unrelated product called SimpleDB developed by Edward ScioreEmbeddable document-store database library with JSON representation of queries (in MongoDB style)In-memory JavaScript DBMSScalable Time Series DBMS based on HBase
Primary database modelDocument store
Relational DBMS
Key-value storeDocument storeDocument storeTime Series DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.51
Rank#256  Overall
#40  Document stores
#118  Relational DBMS
Score1.88
Rank#133  Overall
#23  Key-value stores
Score0.31
Rank#296  Overall
#44  Document stores
Score0.49
Rank#260  Overall
#42  Document stores
Score1.68
Rank#142  Overall
#12  Time Series DBMS
Websitealasql.orgaws.amazon.com/­simpledbgithub.com/­Softmotions/­ejdbgithub.com/­techfort/­LokiJSopentsdb.net
Technical documentationgithub.com/­AlaSQL/­alasqldocs.aws.amazon.com/­simpledbgithub.com/­Softmotions/­ejdb/­blob/­master/­README.mdtechfort.github.io/­LokiJSopentsdb.net/­docs/­build/­html/­index.html
DeveloperAndrey Gershun & Mathias R. WulffAmazonSoftmotionscurrently maintained by Yahoo and other contributors
Initial release20142007201220142011
License infoCommercial or Open SourceOpen Source infoMIT-LicensecommercialOpen Source infoGPLv2Open SourceOpen Source infoLGPL
Cloud-based only infoOnly available as a cloud servicenoyesnonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageJavaScriptCJavaScriptJava
Server operating systemsserver-less, requires a JavaScript environment (browser, Node.js)hostedserver-lessserver-less, requires a JavaScript environment (browser, Node.js)Linux
Windows
Data schemeschema-freeschema-freeschema-freeschema-freeschema-free
Typing infopredefined data types such as float or datenonoyes infostring, integer, double, bool, date, object_idnonumeric data for metrics, strings for tags
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.nonono
Secondary indexesnoyes infoAll columns are indexed automaticallynoyes infovia viewsno
SQL infoSupport of SQLClose to SQL99, but no user access control, stored procedures and host language bindings.nononono
APIs and other access methodsJavaScript APIRESTful HTTP APIin-process shared libraryJavaScript APIHTTP API
Telnet API
Supported programming languagesJavaScript.Net
C
C++
Erlang
Java
PHP
Python
Ruby
Scala
Actionscript
C
C#
C++
Go
Java
JavaScript (Node.js)
Lua
Objective-C
Pike
Python
Ruby
JavaScriptErlang
Go
Java
Python
R
Ruby
Server-side scripts infoStored proceduresnononoView functions in JavaScriptno
Triggersyesnonoyesno
Partitioning methods infoMethods for storing different data on different nodesnonenone infoSharding must be implemented in the applicationnonenoneSharding infobased on HBase
Replication methods infoMethods for redundantly storing data on multiple nodesnoneyesnonenoneselectable replication factor infobased on HBase
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononoyesno
Consistency concepts infoMethods to ensure consistency in a distributed systemnoneEventual Consistency
Immediate Consistency infocan be specified for read operations
noneImmediate Consistency infobased on HBase
Foreign keys infoReferential integrityyesnono infotypically not needed, however similar functionality with collection joins possiblenono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datayes infoonly for local storage and DOM-storageno infoConcurrent data updates can be detected by the applicationnono infoatomic operations within a single collection possibleno
Concurrency infoSupport for concurrent manipulation of datayesyes infoRead/Write Lockingyes
Durability infoSupport for making data persistentyes infoby using IndexedDB, SQL.JS or proprietary FileStorageyesyesyes infoSerialization of a DB in a Node.JS/Cordova/PhoneGap environment. Usage of the IndexedDB-API in a browser.yes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesyesno
User concepts infoAccess controlnoAccess rights for users and roles can be defined via the AWS Identity and Access Management (IAM)nonono

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More resources
AlaSQLAmazon SimpleDBEJDBLokiJSOpenTSDB
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