Microsoft Access Reader Parameters
Database Connection

Select the location of the database to be used.

The password used to access the database. It can be omitted for Access databases without password protection.
Constraints

Enter (or browse for) the name(s) of specific database table(s) to read from.

Enter any SQL where clause that constrains the attributes of the layers selected in the layer list (for example, NUMLANES=2).
Schema Attributes

Use this parameter to expose Format Attributes in Workbench when you create a workspace:
- In a dynamic scenario, it means these attributes can be passed to the output dataset at runtime.
- In a non-dynamic scenario where you have multiple feature types, it is convenient to expose additional attributes using this one parameter. For example, if you have ten feature types and want to expose the same attribute in each one, it is easier to define it once than it is to set each feature type individually in the workspace.