DBMS > AlaSQL vs. PostgreSQL vs. Riak TS
System Properties Comparison AlaSQL vs. PostgreSQL vs. Riak TS
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|Editorial information provided by DB-Engines|
|Name||AlaSQL Xexclude from comparison||PostgreSQL Xexclude from comparison||Riak TS Xexclude from comparison|
|Primary database model||Document store|
|Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Time Series DBMS|
|Secondary database models||Document store|
|Developer||Andrey Gershun & Mathias R. Wulff||PostgreSQL Global Development Group www.postgresql.org/developer||Basho Technologies|
|Initial release||2014||1989 1989: Postgres, 1996: PostgreSQL||2015|
|Current release||15.2, February 2023|
|License Commercial or Open Source||Open Source MIT-License||Open Source BSD||Open Source|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Typing predefined data types such as float or date||no||yes||no|
|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 specific XML-type available, but no XML query functionality.||no|
|SQL Support of SQL||Close to SQL99, but no user access control, stored procedures and host language bindings.||yes standard with numerous extensions||no|
native C library
streaming API for large objects
Native Erlang Interface
|C unofficial client library|
C++ unofficial client library
Clojure unofficial client library
Dart unofficial client library
Go unofficial client library
Groovy unofficial client library
Haskell unofficial client library
Lisp unofficial client library
Perl unofficial client library
Scala unofficial client library
Smalltalk unofficial client library
|Triggers||yes||yes||yes pre-commit hooks and post-commit hooks|
|Partitioning methods Methods for storing different data on different nodes||none||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||none||Source-replica replication other methods possible by using 3rd party extensions||selectable replication factor|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||yes|
|Consistency concepts Methods to ensure consistency in a distributed system||none||Immediate Consistency||Eventual Consistency|
|Foreign keys Referential integrity||yes||yes||no links between datasets can be stored|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||yes only for local storage and DOM-storage||ACID||no|
|Concurrency Support for concurrent manipulation of data||yes||yes|
|Durability Support for making data persistent||yes by using IndexedDB, SQL.JS or proprietary FileStorage||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||yes||no|
|User concepts Access control||no||fine grained access rights according to SQL-standard||no|
More information provided by the system vendor
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|Conferences and events|
PGCon 2023, PostgreSQL Conference for Users and Developers
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