使用EF的时候映射数据的时候，出现了下面的问题。如图：
错误的提示为：Model compatibility cannot be checked because the database does not contain model metadata.Model compatibility can only be checked for databases created using Code First or Code First Migrations.错误的提示为：Model c
阅读背景：
Model compatibility cannot be checked because the database does not contain model metadata
来源：互联网
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