Tagged: Schema evolution
Schema evolution, ontology versioning, and temporal patterns
Pages with this tag
Data model resilience
1How Crosswalker should handle framework updates, re-imports, version tracking, and stale crosswalk detection — architecture decisions for long-term data integrity.
Open questions
2Unresolved design questions for future development.
Challenge 05: The transformation problem
3When frameworks change, the handling isn't always a simple primitive. Sometimes it's a computation. How should Crosswalker handle arbitrary transformations?
Architectural direction exploration
4Defining what Crosswalker actually IS — meta-system for ontology management, not just a framework importer.
ChunkyCSV and transformation engines
5Structured-to-tabular conversion engines as a component of the migration and transformation system.
Deep research synthesis — ontology meta-system, plugin state, E2E testing
6Synthesis of three parallel research agents exploring the architectural direction, current implementation state, and testing infrastructure.
EvolutionPattern taxonomy draft v0.1
7First draft of the novel spec — 8 taxonomy fields classifying how ontologies evolve, applied to 7 frameworks, with SCD type mapping and as-code format.
Layered architecture vision
8Three-layer funnel from universal spec to framework-specific integrations — what makes Crosswalker a platform, not just a plugin.
Vision alignment decisions
9Key architectural and strategic decisions from roadmap planning Q&A — the philosophical foundation for Crosswalker's direction.
Ontology evolution: first principles revisited
10Breaking down the ontology evolution problem from data structure primitives, not organizational conventions. Where we are, what we're deciding, and the paths forward.
Research: atomic operations on graphs — are the 13 primitives primitive enough?
11Literature survey of graph edit distance, ontology diff, tree-diff, schema evolution, and category theory to determine the provably complete set of atomic operations for describing structural changes.
How primitive are the primitives? Pluggable layers and open questions
12Questioning whether the 13 structural primitives are fundamental enough, exploring detection as pluggable logic, taxonomy-over-taxonomies for decisioning, custom transfer logic, and graph vs. hierarchy scope.