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Open Y Venture Interview Questions and Answers

Updated 17 Jan 2025

Q1. EMP DETAILS WHO HAS MAX SAL IN EACH DEPT

Ans.

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

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Q2. INFORMATICA ROUTER VS UNION

Ans.

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.

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Q3. DIMENCTIONS VS FACTS

Ans.

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

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Q4. What are the current trends in interest rates within the market?

Ans.

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.

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Q5. How to override static

Ans.

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.

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Q6. Explain exception handling in java

Ans.

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

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Q7. Explain the Oops concepts

Ans.

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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