Adding an index on a frequently accessed column does not affect the performance of queries that filter or sort on that column.
True
False
Indexing can improve how quickly the system locates rows that match a filter or sorting condition. For instance, when an index is created on a commonly used column, the database engine (DBE) often generates an execution plan (EP) that uses the index to find records more efficiently. An incorrect assumption is that new indexes do not influence performance. In reality, an index can help the DBE skip many non-matching rows, which may reduce the time it takes to return results. By contrast, failing to use indexing on frequently filtered or sorted columns may lead to scanning entire tables rather than using a more optimized search path.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All IT & Cybersecurity Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even bigger discounts than before.
Unlimited access to all performance questions and be prepared for the real thing.
All IT & Cybersecurity Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.