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Open Y Venture Interview Questions and Answers
Q1. EMP DETAILS WHO HAS MAX SAL IN EACH DEPT
Find employee details with max salary in each department.
Group employees by department
Find max salary for each group
Join with employee details to get employee info
Q2. INFORMATICA ROUTER VS UNION
Informatica Router and Union are used for data integration and transformation.
Informatica Router is used to route data based on certain conditions.
Informatica Union is used to combine data from multiple sources.
Router can be used to split data into multiple targets based on conditions.
Union can be used to merge data from multiple sources into a single target.
Router can be used to implement complex data flows.
Union can be used to eliminate duplicates from the data.
Q3. DIMENCTIONS VS FACTS
Dimensions and facts are two types of data in a data warehouse. Dimensions are descriptive attributes while facts are measurable data.
Dimensions are used to categorize and filter data while facts are used to perform calculations and analysis.
Dimensions are often used as the basis for reports and dashboards while facts are used to provide the underlying data.
Examples of dimensions include time, location, and product while examples of facts include sales revenue, units sold, an...read more
Q4. What are the current trends in interest rates within the market?
Current trends in interest rates are influenced by economic conditions and central bank policies.
Interest rates are currently low due to the economic impact of the COVID-19 pandemic.
Central banks, such as the Federal Reserve, have implemented stimulus measures to support the economy.
Long-term interest rates are expected to remain low as central banks maintain accommodative policies.
Q5. How to override static
Static methods cannot be overridden in Java.
Static methods belong to the class itself, not to any instance of the class.
They cannot be overridden as they are resolved at compile-time based on the class they are called on.
However, it is possible to hide a static method in a subclass by declaring a method with the same name and signature.
This is known as method hiding.
Q6. Explain exception handling in java
Exception handling in Java is a mechanism to handle runtime errors and prevent program crashes.
Use try-catch blocks to handle exceptions
Use finally block to execute code regardless of exception
Use throw keyword to manually throw exceptions
Use throws keyword in method signature to declare exceptions that can be thrown
Q7. Explain the Oops concepts
Oops concepts refer to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.
Inheritance: Allows a class to inherit properties and behavior from another class.
Encapsulation: Bundling data and methods that operate on the data into a single unit.
Polymorphism: Ability to present the same interface for different data types.
Abstraction: Hiding the complex implementation details and showing only the necessary features.
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