Ontologies instead of schemas?
Developing and using existing ontologies instead of developing specific schemas for a project means that the data can be consumed in a very rich way by many clients and applications.
Using Solid and ontologies we can develop rich applications for storing complex resuable data, and publishing it easily. For consumpion by a website, an app or another service.
Is Solid good enough? Fast enough for storing complex data? For retrieving this data?
Interoberable.
See ShEx (Shape Expressions) and SHACL (Shapes Constraint Language), ontology.
Question How do these things materialize on a Solid Pod?
You need to install the Community Solid Server on your computer and watch the filesystem?