Data Access has been discontinued. Please refer to this page for more information.

Type Mapping

Telerik Data Access supports flexible mappings from .NET types (e.g., System.String) to database specific SQL types (e.g., VARCHAR on SQL Azure). The default mappings can be customized for a specific datastore. The mapping for specific fields can also be customized. Mappings are resolved by first using any information specified for the field, then looking up a generic type for the type of the field using the .NET Type Mapping, then converting this generic type into actual SQL type information using the Generic Type Mapping. You can have different mapping information for each database supported by Telerik Data Access.

The following table shows the default mapping from .NET types to SQL Azure specific types:

.NET Type MSSQL Azure Type
System.Boolean TINYINT
System.Char CHAR(1)
System.Byte SMALLINT
System.Int16 SMALLINT
System.UInt16 INT
System.Int32 INT
System.UInt32 BIGINT
System.Int64 BIGINT
System.UInt64 DECIMAL(20,0)
System.Single REAL
System.Double FLOAT
System.String VARCHAR(255)
System.DateTime DATETIME
System.Decimal NUMERIC(20,10)
Byte[] IMAGE