一直听过什么B树， 但一直不知道这个B是什么意思， 所以来BB一下。
这个问题其实没有任何意义， 后来在维基百科上看到了很好的解释， 一起来看看：
Rudolf Bayer and Ed McCreight invented the B-tree while working at Boeing Research Labs in 1971 (Bayer & McCreight 1972), but they did not explain what, if anything, the B stands for. Douglas Comer explains:
Donald Knuth speculates on the etymology of B-trees in his May, 1980 lecture on the topic “CS144C classroom lecture about disk storage and B-trees”, suggesting the “B” may have originated from Boeing or from Bayer’s name.
Ed McCreight answered a question on B-tree’s name in 2013: