FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The key difference between columns and rows is that a column arranges data vertically from top to bottom, while a row arranges data horizontally from left to right.

Detailed explanation-2: -The SELECT clause specifies one or more columns to be retrieved; to specify multiple columns, use a comma and a space between column names. To retrieve all columns, use the wild card * (an asterisk). The FROM clause specifies one or more tables to be queried.

Detailed explanation-3: -Click in a cell to the left or right of where you want to add a column. Under Table Tools, on the Layout tab, do one of the following: To add a column to the left of the cell, click Insert Left in the Rows and Columns group. To add a column to the right of the cell, click Insert Right in the Rows and Columns group.