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Power BI : DAX Formula and Storage Engines and Query Evaluation
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10 questions
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- Q1What are the two main engines used in Power BI for processing queries?Calculation Engine and Data EngineVisualization Engine and Data EngineFormula Engine and Storage EngineQuery Engine and Data Engine30s
- Q2How does the Formula Engine handle DAX queries?It fetches data from the data sourceIt stores the data in memoryIt processes logical and mathematical operationsIt renders visualizations30s
- Q3What is the primary role of the Storage Engine in Power BI?To retrieve data from the data sourceTo calculate DAX expressionsTo render visualizationsTo create data models30s
- Q4Which engine in Power BI is responsible for scanning data and retrieving results?Data EngineFormula EngineStorage EngineCalculation Engine30s
- Q5What kind of operations are handled by the Formula Engine?Data visualizationLogical and mathematical operationsData storageData retrieval30s
- Q6What does VertiPaq refer to in the context of Power BI?The data modeling interfaceThe visualization toolThe in-memory columnar storage engineThe DAX calculation language30s
- Q7How does the Storage Engine improve query performance?By reducing data granularityBy re-evaluating DAX expressionsBy using in-memory storageBy rendering visualizations faster30s
- Q8Which type of data storage is used by VertiPaq to enhance performance?Columnar storageFile-based storageHybrid storageRow-based storage30s
- Q9What is a key benefit of using DAX variables in queries?Simplified data visualizationEnhanced data securityFaster data storageImproved code readability and reusability30s
- Q10How do DAX queries interact with the Storage Engine?By retrieving pre-aggregated dataBy rendering data visualizationsBy modifying the data modelBy storing data externally30s