A SQL keyword used to run through a table, one line at a time.

• A. Cursor
• B. Cookie
• C. Check In
• D. Decision Table

Answer: (A)

The idea being tested is how to process rows from a SQL query one at a time. A cursor is the SQL construct designed for that purpose. It lets you iterate over a result set, fetching one row at a time, inspecting its values, and performing per-row logic or updates that can’t easily be done with a single set-based statement. While SQL usually works best by applying operations to all qualifying rows at once, some scenarios—such as complex per-row decisions or actions that depend on previously processed rows—require a cursor to move through the data step by step. Other options don’t fit this concept: a cookie is client-side web storage, not SQL; a check-in is a version-control concept; and a decision table is a modeling tool for business rules, not a SQL mechanism for row-by-row traversal.