What is the role of a dimension table in a data warehouse?
Practice Questions
Q1
What is the role of a dimension table in a data warehouse?
To store transactional data
To provide context to fact data
To manage user access
To perform data cleansing
Questions & Step-by-Step Solutions
What is the role of a dimension table in a data warehouse?
Correct Answer: Dimension tables provide context to the fact data.
Step 1: Understand that a data warehouse stores large amounts of data for analysis.
Step 2: Know that data in a warehouse is often organized into two main types: fact tables and dimension tables.
Step 3: Recognize that fact tables contain the main data or metrics that you want to analyze, like sales amounts or quantities.
Step 4: Learn that dimension tables provide additional information about the facts, such as who made the sale, when it happened, or where it took place.
Step 5: Realize that dimension tables help users understand the facts better by adding context, making it easier to analyze data based on different attributes.
