Final answer:
A value representing known facts with an implicit meaning is an attribute in the context of databases; an attribute is a data element type within a table's column.
Step-by-step explanation:
A value that represents known facts with an implicit meaning in the context of databases is commonly referred to as an attribute. An attribute is a column in a table, within the realm of relational databases, that stores data elements of a particular type. For example, in a table named 'Person', there might be attributes like 'FirstName', 'LastName', 'DateOfBirth', etc., each of which would hold data about these particulars for each row (or tuple) in the table.
Each of these attributes can contain values that are facts, such as a person's first name being 'John'. The attribute itself, being a defined column for a certain type of data, carries an implicit meaning about the kind of information it holds and how that information can be interpreted in the real world. It's this assignment of relevant and factual data to a defined type or category that typifies an attribute in the context of databases.