Learn the function of DirectQuery mode in Power BI. Discover how DirectQuery enables real-time data access from external sources without importing data, supporting up-to-date and scalable reporting.
Table of Contents
Question
In Power BI, what is the function of DirectQuery mode?
A. Converts all data into static Excel files
B. Requires on-premises storage for all datasets
C. Prevents users from refreshing dashboards
D. Allows real-time data access from external data sources without importing data
E. Automatically creates AI-driven insights for all reports
Answer
D. Allows real-time data access from external data sources without importing data
Explanation
DirectQuery mode in Power BI enables live connections to external databases, ensuring that reports display up-to-date data without storing it in Power BI itself.
DirectQuery mode in Power BI allows users to access real-time data from external data sources without importing the data into Power BI. Instead of storing a copy of the data, Power BI queries the underlying data source directly whenever a user interacts with a report or visualization. This ensures that reports always display the most current data available in the source system.
Key characteristics of DirectQuery mode include:
- Live connection: Establishes a direct, live link to data sources such as SQL databases or analysis services, so all queries are executed in real time.
- No data import: Data remains in its original location; Power BI only stores the metadata and schema, not the actual dataset.
- Real-time updates: Any changes in the source data are immediately reflected in Power BI reports and dashboards, making it ideal for scenarios requiring up-to-date information.
- Scalability: Suitable for very large datasets that are impractical to import, as there is no need to transfer or store massive amounts of data in Power BI.
- Security: Sensitive data stays within the source system, enhancing data security and compliance.
DirectQuery mode enables Power BI to provide live, up-to-date reporting by querying external data sources in real time, without storing the data within Power BI itself.
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