Search the courses, subjects, tracks, games and features, or jump straight to a page.
2 cards from this section. Quick, good the night before a test.
What SQL command should you use to view data without changing it?
Think about the command that retrieves data.
Why is it important not to run DELETE on production databases?
Consider the consequences of deleting existing data.
What is a general safety practice before executing DELETE?
Consider steps to confirm your action!
True or False: It's safe to perform destructive queries directly on production databases.
Think about the risks involved.
Analyze a situation where a QA analyst executed a DELETE without testing. What could have been the repercussions?
Think of the critical roles that stored records play.
Create an example of a complex JOIN that demonstrates why proper conditions are needed to avoid performance hits.
What happens when untamed queries lead to floods of data?
4 more questions in this section. Enroll free to practise them all.
Enroll free