| SQL Server 7 data type | ADO data type Enum value |
| binary | adVarBinary |
| bit | adBoolean |
| char | adChar |
| datetime | adDate |
| decimal | adNumeric |
| float | adDouble |
| int | adInteger |
| money | adCurrency |
| nchar | adWChar |
| ntext | adLongVarChar |
| numeric | adNumeric |
| nvarchar | adVarWChar |
| real | adSingle |
| smalldatetime | adDate |
| smallint | adSmallInt |
| text | adLongVarChar |
| timestamp | adBinary |
| tinyint | adUnsignedTinyInt |
| UniqueIdentifier | adGUID |
| varBinary | adVarBinary |
| varChar | adVarChar |
SQL Server / Access数据类型对照表
SQL Server and Access data types.