[多选]
You are planning the migration of a Microsoft SQL Server 2008 database to SQL Azure.
You need to recommend an approach for ensuring that database connectivity does not degrade.
Which two actions should you recommend？（）

A . Implement transactions for database queries.
B . Close database connections in the application.
C . Use Microsoft ADO.NET in the data access layer.
D . Implement a retry policy in the data access layer.

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You are planning the migration of a Microsoft SQL Server 2008 database to SQL Azure.
You need to recommend an approach for ensuring that database connectivity does not degrade.
Which two actions should you recommend？（）

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[多选] You are planning the migration of a Microsoft SQL Server 2008 database to SQL Azure. You need to recommend an approach for ensuring that database connectivity does not degrade. Which two actions should you recommend？（）

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[多选]
You are planning the migration of a Microsoft SQL Server 2008 database to SQL Azure.
You need to recommend an approach for ensuring that database connectivity does not degrade.
Which two actions should you recommend？（）