CREATE TABLE IF NOT EXISTS logs_avg_individual (
    string VARCHAR(100) NOT NULL,
    salt VARCHAR(100) NOT NULL,
    time INTEGER NOT NULL,
	difficulty INTEGER NOT NULL,
	ID SERIAL PRIMARY KEY NOT NULL
);

CREATE TABLE IF NOT EXISTS logs_avg (
	difficulty INTEGER NOT NULL UNIQUE,
    mean_time INTEGER NOT NULL,
    variation_time INTEGER NOT NULL,
    minimum_time INTEGER NOT NULL,
    maximum_time INTEGER NOT NULL,
	ID SERIAL PRIMARY KEY NOT NULL
);