DBMS > LMDB vs. Microsoft SQL Server vs. UniData,UniVerse
System Properties Comparison LMDB vs. Microsoft SQL Server vs. UniData,UniVerse
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|Editorial information provided by DB-Engines|
|Name||LMDB Xexclude from comparison||Microsoft SQL Server Xexclude from comparison||UniData,UniVerse Xexclude from comparison|
|Description||A high performant, light-weight, embedded key-value database library||Microsofts flagship relational DBMS||MultiValue database and application server with SQL mapping layer and meta database capabilities|
|Primary database model||Key-value store||Relational DBMS||Multivalue DBMS|
|Secondary database models||Document store|
|Current release||0.9.29, March 2021||SQL Server 2019, November 2019|
|License Commercial or Open Source||Open Source||commercial restricted free version is available||commercial|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||Linux|
|Typing predefined data types such as float or date||yes||optional|
|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||yes|
|SQL Support of SQL||no||yes||yes|
|APIs and other access methods||ADO.NET|
Tabular Data Stream (TDS)
|Java API JPA|
RESTful HTTP API
|Supported programming languages||C||C#|
Basic U2 Basic
|Server-side scripts Stored procedures||no||Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java||yes|
|Triggers||no||yes||yes U2 Basic|
|Partitioning methods Methods for storing different data on different nodes||none||tables can be distributed across several files (horizontal partitioning); sharding through federation||none|
|Replication methods Methods for redundantly storing data on multiple nodes||none||yes, but depending on the SQL-Server Edition||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|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||ACID configurable|
|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||yes|
|User concepts Access control||no||fine grained access rights according to SQL-standard||Access rights according to SQL-standard and operating system based|
More information provided by the system vendor
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|LMDB||Microsoft SQL Server||UniData,UniVerse|
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