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An Essay on Python development applet Path11

Source: Internet
Author: User
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About the SQL build table to know the relevant knowledge, to build a table needs to clear the relationship between this table and other tables, the primary key is unique and automatically grow, if there is a foreign key, to determine the relationship of many to one, and then the first side of the table to build, and then come back to build a multi-relationship side table, such as involving multiple tables and tables of the relationship between Must first put around the table are built, and then come back to build this table, wisp clear relationship to the design of the table is very important!

Here are some of my own strands of relationships and diagrams:

An Essay on Python development applet Path11

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