每一首歌都有自己的故事。

我总是尽量保持谦逊，尊重每个人。

Spend each day trying to be a little wiser than you were when you woke up.Discharge your duties faithfully and well.Systematically you get ahead, but not necessarily in fast spurts...At the end of the day if you live long enough most people get what they deserve.

Love is the answer, and you know that for sure.

关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。