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#268·500lines

What do these constraints mean in DBDB->physical->Storage ???

Author: SimonCqkCreated Oct 28, 2017Updated Oct 28, 2017
python
class Storage(object):
    SUPERBLOCK_SIZE = 4096
    INTEGER_FORMAT = "!Q" 
    INTEGER_LENGTH = 8

I know the INTEGER_FORMAT , but the other two really confuse me.

Source: aosabook/500lines

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