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# OLE Database Data Types

This table lists the constants to describe column data types in an OLE database.

For more information about OLE Database types, refer to Microsoft documentation. One source of information is the Microsoft documentation of the oledb.h header file.

Host Type | Description
--- | ---
DBTYPE_BYTES | Fixed-length binary data represented as an unsigned char array.
DBTYPE_DBDATE | The OLE DB DBDATE typedef struct as defined in the Oledb.h file.
DBTYPE_DBTIME | The OLE DB DBTIME typedef as defined in the Oledb.h file.
DBTYPE_DBTIMESTAMP | The OLE DB DBTIMESTAMP typedef struct as defined in the Oledb.h file.
DBTYPE_DECIMAL | The OLE DB DECIMAL typedef struct as defined in the Oledb.h file.
DBTYPE_I2 | Integer data stored in 2 bytes (16 bits).
DBTYPE_I4 | Integer data stored in 4 bytes (32 bits).
DBTYPE_NUMERIC | The OLE DB NUMERIC typedef struct as defined in the Oledb.h file.
DBTYPE_R4 | Single precision IEEE floating-point data stored in 4 bytes (32 bits).
DBTYPE_R8 | Double precision floating-point data stored in 8 bytes (64 bits).
DBTYPE_STR | Fixed and variable length character data.
DBTYPE_WSTR | Unicode string data.

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