PHPCMS二次开发问答模块数据库设计.ppt

北风网PHPCMS二次开发 数据库设计 讲师：胖龙（北风网版权所有) 在线问答系统 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 数据库设计的重要性 数据库是整个软件应用的根基，是软件设计的起点，它起着决定性的质变作用，因此我们必须对数据库设计高度重视起来，培养设计良好数据库的习惯，是一个优秀的软件设计人员所必须具备的基本素质条件。一个不良的数据库设计，必然会造成很多问题，轻则增减字段，重则系统无法运行。 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表——v9_qatype 用于存储问题分类设置 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表——v9_question 用于存储问题的基本信息 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表——v9_answer 用于存储答案的基本信息 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表——v9_qacredit 用于存储用户参与答题模块获取的积分 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 问答系统数据表——v9_qalog 用于存储问答系统的日志 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 欢迎访问我们的官方网站 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. * * * * *