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Chapter 2 -
The performance of HYSQL
2.1
The database file characteristics:
The maximum record number of a database document:2,100,000,000;
The maximum record width:65000 byte;
The maximum record field number:32.
2.2 The
field characteristics:
The maximum width of the field name is 8 byte,which is Unicode.
HYSQL supports the following field types:
BOOL(boolean):1 byte;
DATE:4 byte;
TIME:4 byte;
CHAR(character):the maximum width is 65,000 byte;
OBJECT:the maximum width is 65,000 byte
Exact number type{BYTE:1 byte,INTEGER:4
byte,LONG:8 byte};
Approximate number
type{FLOAT:4
byte,the
available digit is 7;DOUBLE:8 byte,the
available digit is 15.}
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