Final answer:
To uniquely identify ticket types based on ticket descriptions, an SQL query with SELECT DISTINCT on the ticket description column should be used.
Step-by-step explanation:
The student's question concerning how to write a query to identify ticket types based on ticket descriptions can be approached using SQL (Structured Query Language). In SQL, a typical way to achieve this is by performing a SELECT statement with a DISTINCT keyword on the column that stores ticket descriptions. This would return a list of all the different ticket descriptions, effectively identifying the types of tickets.
An example SQL query might look like this:
SELECT DISTINCT ticket_description AS ticket_type FROM tickets;
This query selects all unique ticket descriptions from the tickets table and aliases the column as ticket_type in the resulting dataset.