What does an empty field represent?

What represents an empty field in a database?

The SQL NULL is the term used to represent a missing value. A NULL value in a table is a value in a field that appears to be blank.

What does an empty field mean in a dream?

To dream of wandering into an empty field suggests a type of openness in meeting the future, where ideas can rise as inspiration. Regardless of what you are doing in the field, it is a symbol of expanding your awareness. Lush meadows can symbolize the fertile garden growing within you.

What is an empty field?

Empty field myopia (Empty space myopia) - a condition in which the eyes, having nothing specific within the available visual field upon which to focus, focus automatically at a range of the order of a few metres ahead.

What is a null marker?

A null marker is a character string that defines the presence of a NULL value. Typical null markers are the 4-character string NULL and the 2-character string \N . Only CHAR and VARCHAR columns can store an empty value (a zero-length string).