A field of this data type will accept both numbers and text. The alphanumeric keys are the part of the deyboard that looks like a typewriter. When to use - it you want to enter text, or a mixture of text and numbers. When NOT to use - if you want to store only munbers, or only dates. You can enter numbers or dates into text fields but they would get sorted as if they were words and could not easily be used for any calculations.
No
Short text
A text data type field can store alphanumeric characters, such as letters, numbers, and special symbols. It is suitable for storing large amounts of text data, such as descriptions, comments, or notes. Text data types can hold variable lengths of text, depending on the database system used.
Short text
A text field can hold both numbers and text. Sometimes they are referred to as alphanumeric fields.
In a database, it is a string of text that is the same throughout the database.
Text.
Depends on the database programming language
Given that the text is alphanumeric, I would hazard a guess that it is neo-gibberish.
database
Different names can be used, but it is alphanumeric. Some allowed field with a datatype called text or character to allow numbers and text to be entered into them.
varchar