Module 3 · Databases
Why this query is slow
Read: full scan vs. index seek
Trace the query plan
Predict the cost
Drive the state machine
Idle. Resting between lessons — barely there.
Keys 1–5 switch states
Rive handoff
pila.riv — artboard 220×232
layers: shadow · base · mid · top(face)
pebble[n] · cap
bones: root_sway · spine · top_tilt
inputs: trg_focus(b) trg_recover(t)
trg_correct(t) trg_mastery(t)
n_pebbles(n 0–4)
states: Idle ⇄ Focus · Any→Recover→Idle
Idle→Correct(+pebble) · Idle→Mastery→Idle
Dimensional honesty: native 2D with restrained depth cues — contact shadow, overlap, weight. No faux gloss. Production target: layered Rive rig (bones, meshes, constraints, state machine); this file is an art-and-motion audition only.