each column in a table represents what
1. A table is perceived as a 2-dimensional structure composed of rows and columns 2. each table row(tuple) represents a single entity occurrence within an entity set 3. each table column represents an attribute and each column has a distinct name 4. each intersection of a row and column represents a single data value 5. all values in a column must conform to the same data format 6. each column has a specific range of values known as the attribute domain