将数据插入Access数据库时出错

Question

我忙于一项学校作业，我有一个由三个表组成的基本access数据库。Book、Reader和BookRated，其中as BookRated是交集表，主键userName来自Reader和ISBN来自Book组成BookRated的复合主键（作为外键）。

我正试图将信息插入书签表中，但出现以下错误

bool added;

    int i;
    conn = new OleDbConnection(@"Provider=Microsoft.Jet.OleDb.4.0;
                                Data Source =" + Server.MapPath("App_Data\\BookRateInitial.mdb"));
    conn.Open();

    OleDbCommand cmd2 = conn.CreateCommand();
    cmd2.CommandText = @"INSERT INTO bookRated([frnISBN], [title], [rating], [review], [frnUserName])
                      VALUES(@ISBN, @title, @rating, @review, @userName)";
        //adding my parameters
    cmd2.Parameters.AddRange(new OleDbParameter[]
    {
        new OleDbParameter("@title", bookTitle),
        new OleDbParameter("@rating", rating),
        new OleDbParameter("@review", review), 
        new OleDbParameter("@ISBN", isbn), 
        new OleDbParameter("@userName", userName),
    });
    added = true;
    i = cmd2.ExecuteNonQuery();
    conn.Close();
    return added;

Answer 1

检查表bookrated的关系。有关此错误的详细信息，请检查Microsoft支持站点