The 'What is covered' list is lean and assumes competence, but the Constraints section repeats the same compile/verify/stop idea across six overlapping bullets (MANDATORY, PREREQUISITE, SAFETY, BLOCKING, NO EXCEPTIONS, VERIFY) and 'When to use this skill' duplicates the description's triggers, so it could be tightened.

Concrete copy-paste commands are present ('./mvnw compile', 'mvn clean verify') and the reference path is specific, but the core JDBC pattern guidance is delegated to the reference file with no inline executable examples, leaving the substantive technical direction incomplete.

A clear four-step sequence with explicit validation checkpoints — compile before, stop immediately on failure, verify after — provides the feedback loop the rubric expects for database/batch operations.

The body is a concise overview pointing one level deep to a real, valid bundle file (references/411-frameworks-quarkus-jdbc.md), clearly signaled in both the Workflow and Reference sections, with content appropriately split out.

Lists multiple concrete actions — 'Agroal DataSource, parameterized SQL, transactions, batching, and Dev Services' — plus four specific trigger scenarios, matching the 'lists multiple specific concrete actions' anchor.

Explicitly answers both what (programmatic JDBC capabilities) and when ('Use when you need programmatic JDBC in Quarkus' plus 'This should trigger for requests such as'), satisfying the both-what-and-when anchor.

Triggers read as natural user requests — 'Review JDBC or SQL data access in a Quarkus project', 'Improve transactions and parameter binding', 'Fix CDI self-invocation bypassing @Transactional' — giving good coverage of phrasings a user would actually say.

Scoped narrowly to Quarkus programmatic JDBC with distinct triggers and a cross-reference to Panache (@412), making it unlikely to fire for the wrong skill.