Which statement is correct? Flat files use foreign keys to uniquely identify tables.
Flat files use foreign keys to secure data.
A foreign key is a primary key in another table.
A foreign key uniquely identifies a record in a table.

chupapi muñañyo

Explanation:

Chupapi?

C

Explanation:

:)

yes we can change both the color of the value of a cell as well as background color of a cell at the same time .

as we know that excel sheet consists of columns and rows.

and intersection of column and row is called cell.

we can change color of the cell and background of the cell at the same time.

hence the statement that

can a person change color of the cell and background of the cell at the same time is true.

(a) oldest