https://soooprmx.com/20110621-sqlite3%ec%97%90%ec%84%9c-%eb%8c%80%ec%86%8c%eb%ac%b8%ec%9e%90-%ea%b5%ac%eb%b6%84-%ec%97%86%ec%9d%b4-%eb%b9%84%ea%b5%90%ed%95%98%ea%b8%b0/