create table trait
(
    id                  INTEGER
        primary key,
    optolith_key        TEXT                    not null
        unique,
    name                TEXT                    not null,
    kind                TEXT                    not null,
    is_leveled          INTEGER default 0       not null,
    level_min           INTEGER,
    level_max           INTEGER,
    level_step          INTEGER,
    ap_cost_mode        TEXT    default 'FIXED' not null,
    ap_wert             INTEGER,
    ap_per_level        INTEGER,
    ap_formula          TEXT,
    beschreibung        TEXT,
    benoetigt_parameter BOOLEAN default 0       not null,
    check (ap_cost_mode IN ('FIXED', 'PER_LEVEL', 'TABLE', 'FORMULA')),
    check (is_leveled IN (0, 1)),
    check (kind IN ('VORTEIL', 'NACHTEIL'))
);

create index idx_trait_kind
    on trait (kind);