When Is It Necessary to Qualify a Column Name While

question 21

Multiple Choice

When is it necessary to qualify a column name while joining tables in MySQL?

• A) It is necessary when the tables have identical column names.
• B) It is necessary when the tables have different column names.
• C) It is never necessary when you join tables in MySQL.
• D) It is necessary every time you join tables in MySQL.

---

Definitions:

Expenses

Outflows or other using up of assets or incurrence of liabilities during a period from delivering or producing goods, rendering services, or carrying out other activities that constitute the entity’s ongoing major or central operations.

Held-to-maturity Securities

Financial assets purchased with the intention and ability to hold them until a specified maturity date.

Fair Value

The estimated price at which an asset or liability could be sold or settled in a current transaction between willing parties.

Equity Method

An accounting technique used to record investments in associate companies where the investor has significant influence but not full control, recognizing income in proportion to their share of the earnings.