想更新数据库，进行数据压缩，不知道该怎么操作，请教一下大家！

public bool RcedueData(string filePath1,string filePath2)
        {
            bool tag = false;
            try
            {
                JRO.JetEngine jro = new JRO.JetEngineClass();
                string str = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=";
                JRO.JetEngine jet = new JRO.JetEngineClass();
                (str + filePath1, str + filePath2);
                tag = true;
            }
            catch
            {
                tag = false;
            }
            return tag;
        }