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Power BI Essentials

117

Data Extraction
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SQL

153

Basics
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- What is a VIEW in SQL?
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- How do you write a SQL query to find all employees who joined in the last 6 months?
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- How can you avoid SQL injection attacks?
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- What is data warehousing, and how is it different from transactional databases?
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- How can you avoid SQL injection attacks?
Common Table Expression (CTE)
- What are recursive queries, and how can they be used?
- What is the WITH clause used for in SQL?
Performance
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Data Analysis Expression (DAX)

29

DAX Basics
DAX Functions
- What is the difference between SUM and SUMX?
- What is the use of the DIVIDE function?
Measures
- What is a measure in DAX?
Row Context
- How does the EARLIER Function work?
- What is a row context in DAX?
Filter Context
- What is a filter context in DAX?
- What is the difference between CALCULATEand CALCULATE TABLE?
Context Transition
- How does the EARLIER Function work?
- What is the difference between CALCULATEand CALCULATE TABLE?
Time Intelligence
- How do you calculate a running total in DAX?
- How does the SAME PERIOD LAST YEAR function work?
Table Functions
Iterator Functions
- How does the RANKX function work?
- What is the difference between SUM and SUMX?
Relationship
Performance Optimization
Advanced DAX Patterns

Dart & Flutter

107

Asynchronous Programming
Build System
- How do you configure custom build systems in Dart?
Collections
Compilation
- How does Dart manage compilation and deployment for mobile (Flutter) apps?
- How does Dart’s just-in-time (JIT) and ahead-of-time (AOT) compilation work?
Concurrency
Conditional Statements
- How do you write a switch-case statement in Dart?
Data Types
- How do you interact with SQLite in Dart, and what packages do you use?
Debugging & Profiling
- Can you describe a time when you had to debug a complex issue in Dart?
- How would you approach debugging performance bottlenecks in Dart applications?
Dependency Injection
- 02_Can you explain how dependency injection works in Dart?
- How do you implement Dependency Injection (DI) in Dart?
Design Patterns
- How do you define a singleton pattern in Dart?
- How do you implement a factory pattern in Dart?
Exception Handling
FFI
File Handling
- How do you perform file I/O operations in Dart?
- How does the dart:io library interact with files in Dart?
Flutter Animations
- How do you implement complex animations in Flutter using Dart?
Flutter Async Widgets
- How do you use StreamBuilder in Flutter to handle data streams?
- What is a FutureBuilder widget in Flutter (Dart)?
Flutter Widgets
- Can you describe how you would implement a custom widget in Flutter using Dart?
Functional Programming
Generics
- How do you handle generics in Dart?
Internationalization
- How do you handle internationalization and localization in Flutter/Dart?
Language Features
- What are extension methods in Dart, and when should you use them?
Loop Control Statement
- How do you write a basic for loop in Dart?
- What is the difference between for and while loops in Python?
Memory Management
Mixins
Networking
- How can you perform HTTP requests in Dart?
- What is the difference between http and dio package in Flutter/Dart?
Null Safety
Object Oriented Programming
Operators
- What is the difference between == and identical() in Dart?
Package Management
- How do you manage and version your Dart dependencies using pubspec.yaml?
Performance Optimization
Program Structure
- How does the Dart VM differ from the JavaScript VM (in the context of Flutter)?
State Management
Type Checking
Type System
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Web Programming
- Can you explain the concept of dart:html and how Dart interacts with the web?

Python Programming

70

Advanced Functions
- What is decorator in python?
- What is lambda function?
Built-in Functions
Coding Standards
- What is the use of pep 8 in python?
Collections
Comprehensions
- What are Python comprehensions?
- What is list comprehension in Python?
Concurrency
- What is the Global Interpreter Lock (GIL) in Python?
- What is the Global Interpreter Lock (GIL) in Python?
Conditional Statements
- What are control statements in Python?
- What is a ternary operator in Python?
Data Types
Environment Setup
- What is PYTHON PATH?
Exception Handling
- How do you handle exceptions in Python?
File Handling
- How can you handle file operations in Python?
- What is the with statement(Context Manager) in Python and why is it used?
Functional Programming
Functions
Generators
- What is the difference between yield and return in Python?
Introduction
Iterators
- What are Python iterators?
Loop Control Statement
- What is the use of the break, continue, and pass statements in Python?
Memory Management
- How does memory management work in Python?
- What is the difference between deepcopy() and copy()?
Modules
OOPS
Operators
- What is the difference between is and == in Python?
Program Execution
- What is the if name == ‘main’ statement used for?
Type Hints
- What are Python annotations?

Business Analyst

585

09_Business Scenario
01_Fundamentals
02_Data Extraction
03_Data Transformation
04_Data Modeling
05_Data Visualization
06_Dashboard Building
07_Performance Optimization
08_Advanced Analytics

App Developer

2

08_Advanced Development
- How is advanced analytics different from basic reporting?
- What types of business problems require advanced analytics?

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05_Data Visualization

05_Data Visualization

What is visual performance impact?
What is visual-level filter vs page-level filter?
What is waterfall chart and when should it be used?
What questions should a BA ask stakeholders before designing visuals?
When should a bar chart be used?
When should a line chart be used?
When should a pie or donut chart be avoided?
Why is data visualization critical for business decision-making?
Why should colors be used consistently across visuals?

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