DBMS > EXASOL vs. IBM Cloudant
System Properties Comparison EXASOL vs. IBM Cloudant
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|Editorial information provided by DB-Engines|
|Name||EXASOL Xexclude from comparison||IBM Cloudant Xexclude from comparison|
|Description||High-performance, in-memory, MPP database specifically designed for in-memory analytics.||Database as a Service offering based on Apache CouchDB|
|Primary database model||Relational DBMS||Document store|
|Developer||Exasol||IBM, Apache Software Foundation IBM acquired Cloudant in February 2014|
|License Commercial or Open Source||commercial||commercial|
|Cloud-based only Only available as a cloud service||no||yes|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted|
|Typing predefined data types such as float or date||yes||no|
|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|
|SQL Support of SQL||yes||no|
|APIs and other access methods||.Net|
|RESTful HTTP/JSON API|
|Supported programming languages||Java|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||yes Hadoop integration||yes|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no atomic operations within a document possible|
|Concurrency Support for concurrent manipulation of data||yes||yes Optimistic locking|
|Durability Support for making data persistent||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||no|
|User concepts Access control||Access rights for users, groups and roles according to SQL-standard||Access rights for users can be defined per database|
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