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diff --git a/public/sdk/inc/mfc40/afxdb_.h b/public/sdk/inc/mfc40/afxdb_.h
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+// This is a part of the Microsoft Foundation Classes C++ library.
+// Copyright (C) 1992-1995 Microsoft Corporation
+// All rights reserved.
+//
+// This source code is only intended as a supplement to the
+// Microsoft Foundation Classes Reference and related
+// electronic documentation provided with the library.
+// See these sources for detailed information regarding the
+// Microsoft Foundation Classes product.
+
+// Do not include this file directly (included by AFXDB.H & AFXDAO.H)
+
+#ifndef __AFXDB__H__
+#define __AFXDB__H__
+
+//////////////////////////////////////////////////////////////////////////////
+// Recordset Field exchange for ODBC & DAO classes (RFX_ and DFX_)
+
+#define AFX_RFX_SHORT_PSEUDO_NULL (0x7EE4)
+#define AFX_RFX_INT_PSEUDO_NULL (0x7EE4)
+#define AFX_RFX_LONG_PSEUDO_NULL (0x4a4d4120L)
+#define AFX_RFX_BYTE_PSEUDO_NULL 255
+#define AFX_RFX_SINGLE_PSEUDO_NULL (-9.123e19f)
+#define AFX_RFX_DOUBLE_PSEUDO_NULL (-9.123e19)
+#define AFX_RFX_BOOL_PSEUDO_NULL 2
+#define AFX_RFX_DATE_PSEUDO_NULL CTime(0)
+#define AFX_RFX_TIMESTAMP_PSEUDO_NULL 99
+
+#define AFX_RFX_BOOL 1
+#define AFX_RFX_BYTE 2
+#define AFX_RFX_INT 3
+#define AFX_RFX_LONG 4
+#define AFX_RFX_SINGLE 6
+#define AFX_RFX_DOUBLE 7
+#define AFX_RFX_DATE 8
+#define AFX_RFX_BINARY 9
+#define AFX_RFX_TEXT 10
+#define AFX_RFX_LONGBINARY 11
+#define AFX_RFX_SHORT 12
+#define AFX_RFX_CURRENCY 13
+
+//////////////////////////////////////////////////////////////////////////////
+// CLongBinary - a Long (generally > 32k in length) Binary object
+
+class CLongBinary : public CObject
+{
+ DECLARE_DYNAMIC(CLongBinary)
+
+// Constructors
+public:
+ CLongBinary();
+
+// Attributes
+ HGLOBAL m_hData;
+ DWORD m_dwDataLength;
+
+// Implementation
+public:
+ virtual ~CLongBinary();
+
+#ifdef _DEBUG
+ virtual void AssertValid() const;
+ virtual void Dump(CDumpContext& dc) const;
+#endif //_DEBUG
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+#endif // __AFXDB__H__