Zero-Length String- How to indicate a zero-length string

Zero-Length String

How to indicate a zero-length string | Search MS Office A-Z | Search Web Pages/ Design A-Z

Zero-length string means "I know there is no value."
To allow Zero-length string in a field, make sure "Allow Zero length" in field properties in design view is set Yes.
To make a cell a Zero-length string, enter "" in the field.
To search for Zero-length strings , enter "" in the query search criteria.