Info: Array / raster / datacube QL standards

[pebau]

Dear community,

following advice on the CNCF page I provide some input here after discovering this community in an act of serendipity - hope it is ok, and apologies if not; kindly advise.

I see that the group is interested in QL development. If we look at the data structures appearing in real-life applications, we find about 4 basic main categories: sets, hierarchies, graphs, and arrays. None of them can satisfactorily emulate another one when it comes to Big Data and their management & querying. We all know QLs for sets (eg, SQL), hierarchies (eg, XQuery), and graphs (eg, Cypher and ISO GQL); we focus on arrays, and I would like to bring several relevant standards to the group's attention:

• ISO 9075-15:2023 SQL/MDA (Multi-Dimensional Arrays) offers declarative array queries embedded in SQL in a domain-agnostic manner.
• OGC WCPS (Web Coverage Processing Service) offers declarative queries based on the same underlying principles, but (i) with support for space and time semantics and (ii) adopting an XQuery-style syntax to be compatible with the XPath/XQuery world -- tutorial. WCPS also forms the basis for ISO TC211 19123-3.

Background about me:

• our university research group with publications
• our academic spinoff company
• our Array DBMS, rasdaman

If deemed interesting I could join some meeting to present an overview for discussion.

Again, my apologies should I act intrusively.

[manolama]

@pebau I'm so sorry I didn't see this earlier! Yes we'd love to have you participate and learn more about the array queries and WCPS.

[pebau]

@manolama sounds great - can you advise me about next steps?

[manolama]

@pebau I pinged you on LinkedIn and we can share details there