# MySQL database creation...

CREATE DATABASE IF NOT EXISTS laplacianlab_com_sdss;

use laplacianlab_com_sdss;

CREATE TABLE IF NOT EXISTS twitterers (
    id mediumint UNSIGNED NOT NULL AUTO_INCREMENT, 
    twitter_id VARCHAR(255),
    access_token TEXT,
    access_token_secret TEXT,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    PRIMARY KEY (id)
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS eas (
    id mediumint UNSIGNED NOT NULL AUTO_INCREMENT, 
    name VARCHAR(32),
    description TEXT,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),    
    PRIMARY KEY (id)
) ENGINE=InnoDB;

CREATE TABLE IF NOT EXISTS signals (
    id int UNSIGNED NOT NULL AUTO_INCREMENT,
    id_ea mediumint UNSIGNED NOT NULL,
    id_twitterer mediumint UNSIGNED NOT NULL,
    symbol VARCHAR(10) NOT NULL,
    operation VARCHAR(6) NOT NULL,
    value DECIMAL(9,5) NOT NULL,
    created_at TIMESTAMP NOT NULL DEFAULT NOW(),
    PRIMARY KEY (id),
    FOREIGN KEY (id_ea) REFERENCES eas(id),
    FOREIGN KEY (id_twitterer) REFERENCES twitterers(id)
) ENGINE=InnoDB;

# Dump some sample data...

# As explained in Part I, there's one single twitterer

INSERT INTO eas(name, description) VALUES
('Bollinger Bands', '<p>Robot based on Bollinger Bands. Works with H4 charts.</p>'),
('Two EMA', '<p>Robot based on the crossing of two MA. Works with H4 charts.</p>');