Data Integration uses the following data types in mappings and synchronization tasks with Microsoft Excel:
Microsoft Excel Native Data Types
Microsoft Excel data types appear in the Source and Target transformations when you choose to edit metadata for the fields.
Transformation Data Types
Set of data types that appear in the transformations. They are internal data types based on ANSI SQL-92 generic data types, which the run-time environment uses to move data across platforms. Transformation data types appear in all transformations in mappings and synchronization tasks.
When Data Integration reads source data, it converts the native data types to the comparable transformation data types before transforming the data. When Data Integration writes to a target, it converts the transformation data types to the comparable native data types.