DBMS > Microsoft SQL Server vs. OpenQM
System Properties Comparison Microsoft SQL Server vs. OpenQM
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|Editorial information provided by DB-Engines|
|Name||Microsoft SQL Server Xexclude from comparison||OpenQM also called QM Xexclude from comparison|
|Description||Microsofts relational DBMS||QpenQM is a high-performance, self-tuning, multi-value DBMS|
|Primary database model||Relational DBMS||Multivalue DBMS|
|Secondary database models||Document store|
|Current release||SQL Server 2019, November 2019||3.4-12|
|License Commercial or Open Source||commercial restricted free version is available||Open Source GPLv2, extended commercial license available|
|Cloud-based only Only available as a cloud service||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Data scheme||yes||yes with some exceptions|
|Typing predefined data types such as float or date||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.||yes||yes|
|SQL Support of SQL||yes||no|
|APIs and other access methods||ADO.NET|
Tabular Data Stream (TDS)
|Supported programming languages||C#|
|Server-side scripts Stored procedures||Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java||yes|
|Partitioning methods Methods for storing different data on different nodes||tables can be distributed across several files (horizontal partitioning); sharding through federation||yes|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, but depending on the SQL-Server Edition||yes|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|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|
|User concepts Access control||fine grained access rights according to SQL-standard||Access rights can be defined down to the item level|
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|Microsoft SQL Server||OpenQM also called QM|
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