Branch blocks store the following:
■ The minimum key prefix needed to make a branching decision between two keys
■ The pointer to the child block containing the key
If the blocks have n keys then they have n+1 pointers. The number of keys and
pointers is limited by the block size.
分支块
分之块存储以下信息
1. 最小的键值前缀 ， 在两个键值之间做出分支选择
2. 指向包含所查找键值的子块的指针
包含n个键值的分支块对应有n+1个指针 。键值和指针数有块大小所限制[@more@]
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/10599713/viewspace-982570/ ，如需转载，请注明出处，否则将追究法律责任。
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