Constant MANAGED_DDL 

pub const MANAGED_DDL: &str = "
CREATE TABLE IF NOT EXISTS gc_events (
    id                INTEGER PRIMARY KEY,
    session_id        TEXT NOT NULL REFERENCES sessions(id),
    kind              TEXT NOT NULL,
    pause_us          REAL,
    start_us          REAL,
    heap_before_bytes INTEGER,
    heap_after_bytes  INTEGER,
    reason            TEXT,
    layer_id          INTEGER REFERENCES layers(id)
);
CREATE INDEX IF NOT EXISTS idx_gc_start ON gc_events(session_id, start_us);

CREATE TABLE IF NOT EXISTS jit_events (
    id              INTEGER PRIMARY KEY,
    session_id      TEXT NOT NULL REFERENCES sessions(id),
    symbol_id       INTEGER REFERENCES symbols(id),
    compile_us      REAL,
    code_bytes      INTEGER,
    tier            TEXT,
    start_us        REAL,
    layer_id        INTEGER REFERENCES layers(id)
);
";

Managed-runtime tables (.NET, JVM).