DBMS > etcd vs. mSQL
System Properties Comparison etcd vs. mSQL
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|Editorial information provided by DB-Engines|
|Name||etcd Xexclude from comparison||mSQL Mini SQL Xexclude from comparison|
|Description||A distributed reliable key-value store||mSQL (Mini SQL) is a simple and lightweight RDBMS|
|Primary database model||Key-value store||Relational DBMS|
|Current release||3.4, August 2019||4.4, October 2021|
|License Commercial or Open Source||Open Source Apache Version 2.0||commercial free licenses can be provided|
|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||FreeBSD|
|Typing predefined data types such as float or date||no||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.||no||no|
|SQL Support of SQL||no||A subset of ANSI SQL is implemented no subqueries, aggregate functions, views, foreign keys, triggers|
|APIs and other access methods||gRPC|
JSON over HTTP
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||no|
|Triggers||yes, watching key changes||no|
|Partitioning methods Methods for storing different data on different nodes||none|
|Replication methods Methods for redundantly storing data on multiple nodes||Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.||none|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||none|
|Foreign keys Referential integrity||no||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||no|
|Concurrency Support for concurrent manipulation of data||yes||no|
|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.||no||no|
|User concepts Access control||no||no|
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|etcd||mSQL Mini SQL|
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