Question

Mathematical operator: can use a number of mathematical operators directly in any SELECT or WHERE clause.

Option 1: ADD
Option 2: SUBTRACT
Option 3: MULTIPLY
Option 4: DIVIDE

Answer 1

Mathematical operators like ADD, SUBTRACT, MULTIPLY, and DIVIDE can be directly applied in SELECT or WHERE clauses of database queries to perform arithmetic operations on data, while Boolean operators help to refine database searches.

Step-by-step explanation:

Understanding Mathematical Operators in Database Queries

When working with database queries, you can directly use a number of standard mathematical operators such as ADD (+), SUBTRACT (-), MULTIPLY (*), and DIVIDE (/) in any SELECT or WHERE clause. These operations are essential in managing and manipulating numerical data within databases. For instance, when retrieving data, you might need to calculate values on the fly or filter records based on numerical conditions.

To use these operators in a practical example, imagine you want to increase all employee salaries by a certain amount. In a SQL query, you would ADD that amount to the current salary using the '+' operator. Similarly, to calculate the difference between two numeric fields, you would use the '-' operator.

In the context of Boolean logic and its application within database searches, the basic operators such as AND, OR, and NOT can be utilized to refine searches and make them more efficient. By combining Boolean operators with mathematical operators, complex queries can be constructed to obtain very specific information from a database.