CREATE TABLE entities (
    cik INT PRIMARY KEY,               -- CIK is now the primary key, ensuring uniqueness
    entityName VARCHAR(255) NOT NULL  -- Name of the company
);

CREATE TABLE facts (
    taxonomy VARCHAR(255),       -- Taxonomy of the fact
    fact VARCHAR(255) PRIMARY KEY, -- Label of the fact
    label VARCHAR(255),       -- Label of the fact
    description TEXT, -- Description of the fact
    unit VARCHAR(255),           -- Unit of the fact
);

CREATE TABLE data (
    cik INT,                            -- CIK of the company
    fact VARCHAR(255),                 
    start DATE,                        -- Start date of the fact
    end DATE,
    val INT,
    accn VARCHAR(255),
    fy INT,
    fp VARCHAR(255),
    form VARCHAR(255),
    filed DATE,
    frame VARCHAR(255),
    PRIMARY KEY (cik, label)
    FOREIGN KEY (cik) REFERENCES entities(cik),
    FOREIGN KEY (fact) REFERENCES facts(fact)
);