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1.Logical storage structure in the InnoDB engine
The logical structure of the InnoDB storage engine is divided into the following layers:
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TableSpace: table space
- Table space is the highest level in the logical structure of the InnoDB storage engine. If the innodb_file_per_table parameter is turned on, then each table will have a table space file (xxx.ibd), which can correspond to multiple table spaces in a MySQL instance. The table space uses Used to store row data and index data.
- A table space can contain multiple Segment segments.
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Segment: segment
- The table space is composed of many segments, divided into data segments, index segments,