TerminusDB 11.1.1: Multiple Inheritance for Properties

TerminusDB 11.1.1 lets classes inherit properties from multiple superclasses, and adds a docker-compose setup that deploys database, VectorLink, dashboard and change-request API in one command. It was released on 3 August 2023.

• Multiple inheritance — properties from several superclasses, strictest wins.
• Docker-compose deployment — TerminusDB + VectorLink + dashboard + change-request API.
• GraphQL include_children — opt out of subsumed types.

Multiple inheritance

What it does

A class can now inherit properties from several superclasses, and a subclass may even redefine an inherited property — as long as the redefinition is at least as strict as the strictest super definition. Looser redefinitions fail with a schema error.

Why it matters

Semantic representation of data requires inheritance and multiple inheritance. The strengthening and weakening of properties is a key part of schema robustness. A good comparison is with Avro SALAD and similar schema languages.

Read more: Multiple inheritance in the schema guide

Docker-compose deployment

The docker-compose.yml now bundles the full stack: the TerminusDB database, VectorLink (experimental vector sidecar), the change-request API and the local dashboard — which experimentally supports AI search and change requests.

Read more: Install as a Docker container · Set up VectorLink

GraphQL include_children

Generated GraphQL queries gain an include_children argument: set it to exclude documents whose type is subsumed by (a subclass of) the queried type.

Also experimental: GraphQL filters support deep matches on IDs, and a new ids parameter on GET /api/document fetches a list of documents at once.

Also in 11.1.1

• Schema migration scripts now support changes to class hierarchies and key strategies
• TERMINUSDB_TRUST_MIGRATIONS skips the instance-data recheck after a migration (default off while migrations settle in)
• GraphQL keeps a small schema cache for faster repeated queries

Fixes

• Multi-level GraphQL hierarchies return all objects; prefixed properties, reverse links with sanitized names, and id filtering fixed

Upgrade

docker pull terminusdb/terminusdb-server:v11.1.1

No data migration is needed. Docker install guide · Full changelog on GitHub

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