题目：
多选题
The types (classes, structs, enums, and so on) associated with each .NET data provider are located in their own namespaces are:
- A. System.Data. Contains provider-independent types such as the DataSet and DataTable.
- B. System.Data.OleDb. Contains the OLE DB .NET Data Provider types.
- C. System.Data.OracleClient. Contains the Oracle .NET Data Provider
- D. System.Data.Odbc. Contains the ODBC .NET Data Provider types.
- E. System.Data.SqlClient. Contains the SQL Server .NET Data Provider types.
答案：
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