[Epic] Provide a set of feature queries

[Daniel-Mietchen]

Epic description in words:

This epic is to provide a set of queries that demonstrate technical features of the query infrastructure or the data types.

Additional Info:

Feature queries require at least the following

• a queriable database with well-defined data structures
• some data in that database
• some feature to demonstrate
• some interface to send queries to the database and receive a response
• relevant permissions

They serve several purposes

• documenting, testing and teaching some aspects of the infrastructure
• documenting, testing and teaching some aspects of the data
• paving the way towards useful queries as per [Epic] Provide a set of useful queries #346 and federated queries as per [Epic] Provide a set of federated queries #347

Corresponding Milestones:

• M-TA5-A3 API access possible.
• M-TA5-A4 Math specific data-types implemented.
• M-TA5-A5 External identifiers integrated.
• M-TA5-C1 Ontologies implemented.
• M-TA5-C2 MaRDI metadata standard for scientists and publications established.
• M-TA5-C3 MaRDI metadata standard for software and institutions established.

Epic issues:

• issue one Github-link
• ...

Related bugs:

Epic acceptance criteria:

• At least one feature query for each implemented data type, along with suitable documentation.
• At least one feature query for each implemented external identifier, along with suitable documentation.
• A mechanism that regularly checks that the queries perform as documented.

Checklist for this epic:

• the main MaRDI project has been assigned as project
• report has been created