BDA mysql component for accessing mysql databases

利用Visual C＋＋实现了一个考勤管理系统，其中的代码可以直接应用到实际应用中-using Visual C++ implementation of a performance appraisal system, the code can be applied directly to the practical application

SQL基础教程上的一些源码，希望会对初学者有一定的帮助。-SQL tutorial on the basis of a number of source code, I hope will have some help for beginners.

用PB讲解数据库应用技术，标准老师课堂讲课讲义，内容生动（还有老师弄得例子在里面），从登陆界面一直到基本信息库都有涵盖；去享受吧~！-Explained with the PB database, application technology, standards, teacher lectures notes, the contents of a lively (and also confused examples in which the teacher), from landing to the basic information database interface has been covered in to enjoy bar ~!

SQL200自定义函数MD5加密,测试-MD5

人力资源管理系统，讲述了关于人力资源管理系统的如何建立与实现，为源代码方式上传。-Human resources management system, described on human resources management system and implementation of how to set up, the way the source code for the upload.

SQL数据库语法教程，深入了解SQL，对于初学者很有帮助-Grammar SQL database, in-depth understanding of SQL, very helpful for beginners

guanlixitong wo xia zai de

一个高校学籍管理系统 源代码完成了以下功能： 1)能够从屏幕上读取一个学生的信息并将信息存入到数据文件中。 2)能够将指定的信息从文件中删除。 3)能够按编号、姓名对学生的信息进行检索并将检索结果显示在屏幕上。 4)可以统计全部学生的总成绩，及其在班上的排名。 5)能够统计各科的平均成绩及及格率。 6)要求有错误提示功能，例如性别只能输入男女，输入错误提示重新输入。 7)如果检索不到相应的信息应提示用户。-a source code management system to complete the following functions : 1) to read from the screen of a student information and information into the data file. 2) can be designated information deleted from the document. 3) to by number, name of student information retrieval and search results displayed on the screen. 4) Statistical all students can be a total score, and the class rankings. 5) Statistics Branch to the average scores and passing rates. 6) require a functional errors, such as sex between men and women can only import, import errors to re-enter. 7) If less than the corresponding retrieval of information should prompt the user.

群落按照物种相似形组成进行聚类分析，可以用树状图较好的表现物种的组成关系。受到很多植被学家的重视。这里以 R 软件实现聚类分析为例。有详细的具体步骤和代码。