Final answer:
The search conditions of a WHERE clause consist of Boolean expressions, which include the use of Boolean operators such as AND, OR, and NOT to filter and manage search results.
Step-by-step explanation:
The search conditions of a WHERE clause consist of Boolean expressions. When writing a query, the WHERE clause filters data based on a specified condition. The use of Boolean expressions is critical because they are declarations that can evaluate to either true or false.
These expressions incorporate Boolean operators like AND, OR, and NOT which help to narrow down or expand the search results. For instance, in a database search, you may use these operators in a where clause such as status='active' AND creation_date > '2021-01-01', where both conditions need to be true for the record to be included in the results.