DBMS > Microsoft SQL Server vs. Percona Server for MySQL vs. Valentina Server
System Properties Comparison Microsoft SQL Server vs. Percona Server for MySQL vs. Valentina Server
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|Editorial information provided by DB-Engines|
|Name||Microsoft SQL Server Xexclude from comparison||Percona Server for MySQL Xexclude from comparison||Valentina Server Xexclude from comparison|
|Description||Microsofts flagship relational DBMS||Enhanced drop-in replacement for MySQL based on XtraDB or TokuDB storage engines with improved performance and additional diagnostic and management features.||Object-relational database and reports server|
|Primary database model||Relational DBMS||Relational DBMS||Relational DBMS|
|Secondary database models||Document store|
|Current release||SQL Server 2019, November 2019||8.0.28-20, 2022||5.7.5|
|License Commercial or Open Source||commercial restricted free version is available||Open Source GPL version 2||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Implementation language||C++||C and C++|
|Server operating systems||Linux|
|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.||yes||yes|
|SQL Support of SQL||yes||yes||yes|
|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||yes|
|Partitioning methods Methods for storing different data on different nodes||tables can be distributed across several files (horizontal partitioning); sharding through federation|
|Replication methods Methods for redundantly storing data on multiple nodes||yes, but depending on the SQL-Server Edition||Multi-source 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|
|Foreign keys Referential integrity||yes||yes||yes|
|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||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||Users with fine-grained authorization concept no user groups or roles||fine grained access rights according to SQL-standard|
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|Microsoft SQL Server||Percona Server for MySQL||Valentina Server|
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