DBMS > AlaSQL vs. PostgreSQL vs. SiteWhere
System Properties Comparison AlaSQL vs. PostgreSQL vs. SiteWhere
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|Editorial information provided by DB-Engines|
|Name||AlaSQL Xexclude from comparison||PostgreSQL Xexclude from comparison||SiteWhere 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||SiteWhere|
|Initial release||2014||1989 1989: Postgres, 1996: PostgreSQL||2010|
|Current release||14.1, November 2021|
|License Commercial or Open Source||Open Source MIT-License||Open Source BSD||Open Source Common Public Attribution License Version 1.0|
|Cloud-based only Only available as a cloud service||no||no||no|
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|Data scheme||schema-free||yes||predefined scheme|
|Typing predefined data types such as float or date||no||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.||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
|Server-side scripts Stored procedures||no||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.|
|Partitioning methods Methods for storing different data on different nodes||none||partitioning by range, list and (since PostgreSQL 11) by hash||Sharding based on HBase|
|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 based on HBase|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||none||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||yes||yes||no|
|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||no|
|User concepts Access control||no||fine grained access rights according to SQL-standard||Users with fine-grained authorization concept|
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