One parameter is a collection of associative arrays that describe the database: table names, column names, primary keys, and foreign keys.
一个参数是描述数据库的关联数组集合：表名、列名、主键和外键。
One parameter is a collection of associative arrays that describe the database: table names, column names, primary keys, and foreign keys.
一个参数是描述数据库的关联数组集合：表名、列名、主键和外键。
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