To answer this question, you need to understand the functions used to manipulate character, number, or date column values. Let's go through each option to understand why it is correct or incorrect:
Option A) CONCAT - This option is correct because the CONCAT function is used to concatenate (or combine) two or more strings together. It can be used to manipulate character column values.
Option B) ROUND - This option is incorrect because the ROUND function is used to round a number to a specified number of decimal places. It is not used to manipulate character, number, or date column values.
Option C) TRUNC - This option is incorrect because the TRUNC function is used to truncate a number to a specified number of decimal places. It is not used to manipulate character, number, or date column values.
Option D) RPAD - This option is correct because the RPAD function is used to pad a string with a specified character to a specified length. It can be used to manipulate character column values.
Option E) INSTR - This option is correct because the INSTR function is used to find the position of a substring within a string. It can be used to manipulate character column values.
The correct answer is A, D, and E. These options are correct because the CONCAT, RPAD, and INSTR functions can be used to manipulate character, number, or date column values.