固定长度的记录要优于可变长度的记录，因为DB2代码专门为处理固定长度的记录进行优化。

Fixed-length records are preferred over varying length records, because the DB2 code is optimized for processing fixed-length records.

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而对于可变长度的记录，其长度可能会变得不再适合初始页，因此必须将其转移到其他页。

However, a record of variable length can possibly be updated to a length that no longer fits on the original page, and so it must be moved to another page.

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每个记录参考一个相关数据的可变长度存储器，一个64位key。而一个创建和删除处理ID根据这个key被索引。

Each record references a variable-length store of related data, a 64 bit key, and a creation and deletion transaction id which is indexed along with the key.

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每个记录参考一个相关数据的可变长度存储器，一个64位key。而一个创建和删除处理ID根据这个key被索引。

Each record references a variable-length store of related data, a 64 bit key, and a creation and deletion transaction id which is indexed along with the key.

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