{
  "instruction": "Design SQLite schemas with STRICT tables, indexes on foreign key columns, migration patterns, INTEGER for money, TEXT for dates, and CHECK constraints for enums",
  "relevant_when": "Agent creates or modifies SQLite table schemas in a Node.js application",
  "context": "SQLite does NOT auto-index foreign key columns (unlike PostgreSQL), so every DELETE on a parent table without an FK index triggers a full child-table scan. STRICT tables enforce type checking that SQLite otherwise skips. Money must be INTEGER (cents) to avoid floating-point errors. Dates must be TEXT in ISO 8601 format. Migrations should be sequential and tracked in a _migrations table, not scattered CREATE TABLE IF NOT EXISTS.",
  "sources": [
    {
      "type": "file",
      "filename": "skills/sqlite-node-best-practices/SKILL.md",
      "tile": "tessl-labs/sqlite-node-best-practices@0.2.0"
    }
  ],
  "checklist": [
    {
      "name": "indexes-on-foreign-keys",
      "rule": "Agent creates an explicit CREATE INDEX on every foreign key column in the schema",
      "relevant_when": "Agent defines tables with foreign key relationships in SQLite"
    },
    {
      "name": "migration-pattern",
      "rule": "Agent uses a sequential migration pattern with a _migrations tracking table, not inline CREATE TABLE IF NOT EXISTS scattered in app code",
      "relevant_when": "Agent creates SQLite tables in a Node.js application"
    },
    {
      "name": "money-as-integer",
      "rule": "Agent stores monetary values as INTEGER (cents) not REAL or FLOAT",
      "relevant_when": "Agent defines columns that store prices, amounts, or monetary values"
    },
    {
      "name": "dates-as-text",
      "rule": "Agent stores dates/timestamps as TEXT with ISO 8601 format using datetime('now') defaults, not as INTEGER unix timestamps or REAL",
      "relevant_when": "Agent defines columns that store dates or timestamps in SQLite"
    },
    {
      "name": "strict-tables",
      "rule": "Agent creates tables with the STRICT keyword to enforce column type checking",
      "relevant_when": "Agent creates new SQLite tables"
    },
    {
      "name": "check-constraints-for-enums",
      "rule": "Agent uses CHECK constraints to validate enum-like TEXT columns (e.g. CHECK (status IN ('a', 'b', 'c')))",
      "relevant_when": "Agent defines columns that should only accept a fixed set of values"
    },
    {
      "name": "integer-primary-key",
      "rule": "Agent uses INTEGER PRIMARY KEY (rowid alias) for primary keys, using AUTOINCREMENT only when ID reuse must be prevented",
      "relevant_when": "Agent defines primary key columns in SQLite tables"
    }
  ]
}