sed是基于行的，因此按顺序对每一行执行命令。
Sed is line-based, so the commands are performed on each line in order.
紧凑的数据表可以针对基于行的数据库做存储块优化，让SQL执行得更好。
Compact tables can optimize storage blocks for row-based databases and accordingly make SQL perform better.
pyxie 所使用的基于行的 PYX 格式是不受语言限制的，其工具适用于几种语言。
The line-oriented PYX format used by pyxie is language-independent, and tools are available for several languages.
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