DBMS > Amazon Aurora vs. H2 vs. Immudb vs. Microsoft SQL Server
System Properties Comparison Amazon Aurora vs. H2 vs. Immudb vs. Microsoft SQL Server
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|Editorial information provided by DB-Engines|
|Name||Amazon Aurora Xexclude from comparison||H2 Xexclude from comparison||Immudb Xexclude from comparison||Microsoft SQL Server Xexclude from comparison|
|Description||MySQL and PostgreSQL compatible cloud service by Amazon||Full-featured RDBMS with a small footprint, either embedded into a Java application or used as a database server.||An open source immutable (append-only) database with cryptographic verification which makes it tamper-resistant and fully auditable.||Microsofts flagship relational DBMS|
|Primary database model||Relational DBMS||Relational DBMS||Key-value store||Relational DBMS|
|Secondary database models||Document store||Spatial DBMS||Relational DBMS||Document store|
|Current release||2.1.210, January 2022||1.2.3, April 2022||SQL Server 2019, November 2019|
|License Commercial or Open Source||commercial||Open Source dual-licence (Mozilla public license, Eclipse public license)||Open Source Apache Version 2.0||commercial restricted free version is available|
|Cloud-based only Only available as a cloud service||yes||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Server operating systems||hosted||All OS with a Java VM||BSD|
|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||no||no||yes|
|SQL Support of SQL||yes||yes||SQL-like syntax||yes|
|APIs and other access methods||ADO.NET|
PostgreSQL wire protocol
Tabular Data Stream (TDS)
|Supported programming languages||Ada|
|Server-side scripts Stored procedures||yes||Java Stored Procedures and User-Defined Functions||no||Transact SQL, .NET languages, R, Python and (with SQL Server 2019) Java|
|Partitioning methods Methods for storing different data on different nodes||horizontal partitioning||none||Sharding||tables can be distributed across several files (horizontal partitioning); sharding through federation|
|Replication methods Methods for redundantly storing data on multiple nodes||Source-replica replication||With clustering: 2 database servers on different computers operate on identical copies of a database||yes, but depending on the SQL-Server Edition|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||ACID||ACID||ACID|
|Concurrency Support for concurrent manipulation of data||yes||yes, multi-version concurrency control (MVCC)||yes||yes|
|Durability Support for making data persistent||yes||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||yes||no||yes|
|User concepts Access control||fine grained access rights according to SQL-standard||fine grained access rights according to SQL-standard||fine grained access rights 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.
|Amazon Aurora||H2||Immudb||Microsoft SQL Server|
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