The Schema (Any Format) reader produces an FME feature that contains information about the source dataset for any given format. Currently, only the schema information is returned.
This reader is most useful in combination with transformers that can use the schema information to manipulate the output; it is not intended to be used for true translation.
FME License and Available Formats
The formats available to the Schema Reader are limited to the formats that available with your current license.
For example, if you have a license for FME Base Edition, you will not be able to read the schema for a format that requires an FME Professional Edition license.
Since enterprise-level databases require connection information and a table name, you cannot use this format to read from a database other than Esri File or Personal Geodatabase.