Data schema description about data-pipes HOT 3 OPEN

Candidates for an intermediate DSL to describe schema of data:

• ECMAScript 2019 › Record specification type
• GraphQL schema we would need a subset, describing value literals
• DSPL
• Datomic Schema Reference
• clojure.spec (see article Clojure.spec vs Schema)
• Plumatic Schema (ex-Prismatic Schema)
• Swagger Open API schema
• Google BigQuery Schema
• JSONschema
• Flow
• TypeScript
• EDN format (tags)
• Haskell datatypes
• Elm datatypes

GraphQL schema has our preference currently, as we are dealing with data coming from an GraphQL API gateway in our POC Electra and Share Class Admin apps, where we can request schema of a query or mutation result by type introspection; GraphQL schema has a normative specification and is feature rich.

from data-pipes.

We also use the Neo4j graph database extensively and would be interested in getting the types of properties of its entities along the results of a query.

Neo4j has schema validation features, but as of version 3.4, it focuses on relationships between nodes of the database, as well as uniqueness constraints. It is unclear to me, whether there are features, that would allow to retrieve out of the box the type annotations of properties along the results of a query.

Explore OpenCypher Type System and Type Annotations CIP and Neo4j Object Graph Model.

from data-pipes.

ECMA262 › ECMAScript® 2019 Language Specification
https://tc39.github.io/ecma262/#sec-list-and-record-specification-type

will add support for a Record type, along with the ability to name the schema of a record (defined as « commonly used field combinations of a Record»).

from data-pipes.