DBMS > Memcached vs. Microsoft SQL Server vs. Sadas Engine
System Properties Comparison Memcached vs. Microsoft SQL Server vs. Sadas Engine
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|Editorial information provided by DB-Engines|
|Name||Memcached Xexclude from comparison||Microsoft SQL Server Xexclude from comparison||Sadas Engine Xexclude from comparison|
|Description||In-memory key-value store, originally intended for caching||Microsofts flagship relational DBMS||SADAS Engine is a columnar DBMS specifically designed for high performance in Data warehouse environments|
|Primary database model||Key-value store||Relational DBMS||Relational DBMS|
|Secondary database models||Document store|
|Developer||Danga Interactive originally developed by Brad Fitzpatrick for LiveJournal||Microsoft||SADAS s.r.l.|
|Current release||1.6.18, January 2023||SQL Server 2022, November 2022||8.0|
|License Commercial or Open Source||Open Source BSD license||commercial restricted free version is available||commercial free trial version available|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||no||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||no|
|SQL Support of SQL||no||yes||yes|
|APIs and other access methods||Proprietary protocol||ADO.NET|
Tabular Data Stream (TDS)
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java||no|
|Partitioning methods Methods for storing different data on different nodes||none||tables can be distributed across several files (horizontal partitioning); sharding through federation||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||none Repcached, a Memcached patch, provides this functionallity||yes, but depending on the SQL-Server Edition||none|
|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||no||yes||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||no||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes managed by 'Learn by Usage'|
|User concepts Access control||yes using SASL (Simple Authentication and Security Layer) protocol||fine grained access rights according to SQL-standard||Access rights for users, groups and roles according to SQL-standard|
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We invite representatives of vendors of related products to contact us for presenting information about their offerings here.
|Memcached||Microsoft SQL Server||Sadas Engine|
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