문제

I am doing a system with 3 tier architecture. I have 2 folder named DAL and BLL. Can I put my Dataset.xsd file in DAL folder and consider it as a that data access layer. Or is it wrong according to real world situation?

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해결책

DAL is anything dealing directly with the data storage and retrieval. In your case, the DataTableAdapter is dealing directly with the data layer and thus is considered DAL - you are correct. BLL will be any business rules or additional functionality that you wish to abstract above the DAL.

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