DBMS > Heroic vs. IBM Cloudant vs. Microsoft SQL Server
System Properties Comparison Heroic vs. IBM Cloudant vs. Microsoft SQL Server
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|Editorial information provided by DB-Engines|
|Name||Heroic Xexclude from comparison||IBM Cloudant Xexclude from comparison||Microsoft SQL Server Xexclude from comparison|
|Description||Time Series DBMS built at Spotify based on Cassandra or Google Cloud Bigtable, and ElasticSearch||Database as a Service offering based on Apache CouchDB||Microsofts flagship relational DBMS|
|Primary database model||Time Series DBMS||Document store||Relational DBMS|
|Secondary database models||Document store|
|Developer||Spotify||IBM, Apache Software Foundation IBM acquired Cloudant in February 2014||Microsoft|
|Current release||SQL Server 2019, November 2019|
|License Commercial or Open Source||Open Source Apache 2.0||commercial||commercial restricted free version is available|
|Cloud-based only Only available as a cloud service||no||yes||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||Linux|
|Typing predefined data types such as float or date||yes||no||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no||no||yes|
|Secondary indexes||yes via Elasticsearch||yes||yes|
|SQL Support of SQL||no||no||yes|
|APIs and other access methods||HQL (Heroic Query Language, a JSON-based language)|
|RESTful HTTP/JSON API||ADO.NET|
Tabular Data Stream (TDS)
|Supported programming languages||C#|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding||tables can be distributed across several files (horizontal partitioning); sharding through federation|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Multi-source replication|
|yes, but depending on the SQL-Server Edition|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||yes||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency|
|Eventual Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no atomic operations within a document possible||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes Optimistic locking||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no||no||yes|
|User concepts Access control||Access rights for users can be defined per database||fine grained access rights according to SQL-standard|
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|Heroic||IBM Cloudant||Microsoft SQL Server|
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