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Oracle Data Types Mapping

XPO creates these column types when updating the Oracle database schema and expects them in existing databases.

.NET Type Database Column Type
Boolean number(1,0)
Byte number(3,0)
SByte number(3,0)
Char nchar
Decimal number(19,5)
Double double precision
Single float
Int16 number(5,0)
UInt16 number(5,0)
Int32 int
UInt32 numeric(10,0)
Int64 number(20,0)
UInt64 number(20,0)
Guid char(36)
String nvarchar2
DateTime date
TimeSpan double precision
Byte[] blob or raw(N)
Unlimited size string nclob

Mapping Properties To Database Column Types Not Supported By Default

If a column type is not listed in the above table but can be converted to any of the listed type by the database, it can be read and modified by XPO. To create a column of a specific type in the database when updating the schema, decorate the property with DbTypeAttribute. If a column type cannot be converted to a supported type, it is possible to support such columns by creating a custom connection provider. Here are some examples:

See Also