Databases
This article is about choice of database models and implementations.
Known types of databases
- w:Relational database or w:RDBMS
- w:Triplestores handle information stored as w:RDF-triplets almost always in the subject-predicate-object form
- w:Graph databases would intuitively appear more advanced than using RDF-triplet composed semantic networks.
- w:Object databases were a supposed fad in the late 80's and early 90's as w:relational algebra based systems are quite old.
Relational database
- On default MediaWikis run on w:MySQL or the better and more ethical binary compatible drop-in replacement w:MariaDB. A recent fork by the original MySQL founders from MySQL. The Netherlands server serving the Consumium free social media run on MariaDB 10.
- Postgresql is also in use working as data storage for w:GNU MediaGoblin at https://media.consumium.org
Subject-predicate-object database
Subject-predicate-object databases basically construct w:semantic networks from interlinked atomic units called a w:triplet.
These networks may be queried with a suitable query language such as w:SPARQL which in practice allows you to compose semantic queries.
Relevant subject-predicate-object database powered systems to interoperate with
Things to consider in selection of triplestore
A w:triplestore maybe a native implementation from ground up or be standing on the shoulders of a standard RDBMS system where actual w:SQL is formulated by the interpreter and then queried from SQL. This probably has upsides and downsides.