data-engineeringDesign and implement data pipelines (ETL/ELT), warehousing, and analytics engineering. Use when: data pipeline, etl, elt, spark, airflow, dbt, warehouse, big data, sql optimization, kafka.
data-governanceData lineage, classification (PII/Confidential), and integrity checks (checksums). Use when: data governance.
db-migrationDatabase schema changes and migration workflow — safe, reversible, tested. Use when: migration, schema, database, alter table, add column, rename column, DB change.
semantic-webDesign Semantic Web structures, Ontologies, and Meta-knowledge graphs. Use when: design ontology, semantic web, knowledge graph architecture, rdf data model, sparql, linked data.
sql-optimizationQuery tuning, indexing strategies, and EXPLAIN plan analysis. Use when: sql optimization.