DBMS > IBM Db2 warehouse vs. SpaceTime vs. Yaacomo
System Properties Comparison IBM Db2 warehouse vs. SpaceTime vs. Yaacomo
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|Editorial information provided by DB-Engines|
|Name||IBM Db2 warehouse formerly named IBM dashDB Xexclude from comparison||SpaceTime Xexclude from comparison||Yaacomo Xexclude from comparison|
|Yaacomo seems to be discontinued and is removed from the DB-Engines ranking|
|Description||Cloud-based data warehousing service||SpaceTime is a spatio-temporal DBMS with a focus on performance.||OpenCL based in-memory RDBMS, designed for efficiently utilizing the hardware via parallel computing|
|Primary database model||Relational DBMS||Spatial DBMS||Relational DBMS|
|Secondary database models||Relational DBMS|
|License Commercial or Open Source||commercial||commercial||commercial|
|Cloud-based only Only available as a cloud service||yes||no||no|
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|Server operating systems||hosted||Linux||Android|
|Typing predefined data types such as float or date||yes||yes||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 Import/export of XML data possible||no||no|
|SQL Support of SQL||yes||A subset of ANSI SQL is implemented||yes|
|APIs and other access methods||.NET Client API|
|RESTful HTTP API||JDBC|
|Supported programming languages||Java|
|Server-side scripts Stored procedures||PL/SQL, SQL PL||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Fixed-grid hypercubes||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||yes||Real-time block device replication (DRBD)||Source-replica replication|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes||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.||yes||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||yes||fine grained access rights according to SQL-standard|
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|IBM Db2 warehouse formerly named IBM dashDB||SpaceTime||Yaacomo|
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