How many characters does the ? wildcard represent?

The question pertains to the use of wildcards in various computer applications, including data processing and querying systems. The ? wildcard is specifically designed to represent a single character in a string.

For example, if you were searching for the term "cat?", it would match both "cats" and "cat1," since the ? can stand in for any single character in that position. This particular functionality allows for flexible searching and can be incredibly useful when dealing with data that may vary in character length or composition.

In summary, the ? wildcard is used to signify exactly one character, making it a powerful tool for pattern matching in text and data processing scenarios.