External Data Source usage
            
| C# | Visual Basic | Visual C++ | J# | 
public enum Usage
Public Enumeration Usage
public enum class Usage
public enum Usage
| Member | Description | 
|---|---|
| ReadWrite | 
            External Data Source will be used as read through and write through.
              | 
| ReadOnly | 
            External Data Source will be used as read through.
              | 
