DBMS > Datomic vs. Manticore Search vs. Postgres-XL
System Properties Comparison Datomic vs. Manticore Search vs. Postgres-XL
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|Editorial information provided by DB-Engines|
|Name||Datomic Xexclude from comparison||Manticore Search Xexclude from comparison||Postgres-XL Xexclude from comparison|
|Description||Datomic builds on immutable values, supports point-in-time queries and uses 3rd party systems for durability||Multi-storage database for search, including full-text search.||Based on PostgreSQL enhanced with MPP and write-scale-out cluster features|
|Primary database model||Relational DBMS||Search engine||Relational DBMS|
|Secondary database models||Time Series DBMS using the Manticore Columnar Library||Document store|
|Initial release||2012||2017||2014 since 2012, originally named StormDB|
|Current release||1.0.6735, June 2023||6.0, February 2023||10 R1, October 2018|
|License Commercial or Open Source||commercial limited edition free||Open Source GPL version 2||Open Source Mozilla public license|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||Java, Clojure||C++||C|
|Server operating systems||All OS with a Java VM||FreeBSD|
|Data scheme||yes||Fixed schema||yes|
|Typing predefined data types such as float or date||yes||Int, Bigint, Float, Timestamp, Bit, Int array, Bigint array, JSON, Boolean||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||Can index from XML||yes XML type, but no XML query functionality|
|Secondary indexes||yes||yes full-text index on all search fields||yes|
|SQL Support of SQL||no||SQL-like query language||yes distributed, parallel query execution|
|APIs and other access methods||RESTful HTTP API||Binary API|
RESTful HTTP/JSON API
RESTful HTTP/SQL API
SQL over MySQL
native C library
streaming API for large objects
|Supported programming languages||Clojure|
|Server-side scripts Stored procedures||yes Transaction Functions||user defined functions||user defined functions|
|Triggers||By using transaction functions||no||yes|
|Partitioning methods Methods for storing different data on different nodes||none But extensive use of caching in the application peers||Sharding Partitioning is done manually, search queries against distributed index is supported||horizontal partitioning|
|Replication methods Methods for redundantly storing data on multiple nodes||none But extensive use of caching in the application peers||Synchronous replication based on Galera library|
|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||no||yes|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||yes isolated transactions for atomic changes and binary logging for safe writes||ACID MVCC|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes using external storage systems (e.g. Cassandra, DynamoDB, PostgreSQL, Couchbase and others)||yes The original contents of fields are not stored in the Manticore index.||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes recommended only for testing and development||no|
|User concepts Access control||no||no||fine grained access rights according to SQL-standard|
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