Deutsche Bank Interview Questions and Answers for Freshers

It was data structures and algorithm

Q1. What is friend function
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Q2. Basic definitions of oops
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Object-Oriented Programming (OOP) is a programming paradigm based on the concept of objects, which can contain data and methods.
• Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).

• Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).

• Polymorphism: Ability to present the same int...read more
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Q1. What are Corporate Actions?
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Corporate Actions are events initiated by a publicly traded company that can affect the securities issued by the company.
• Corporate Actions include events such as stock splits, dividends, mergers, acquisitions, spin-offs, and rights issues.

• These events can impact the value of securities held by investors and require adjustments to be made in fund accounting.

• Fund accountants need to accurately record and track Corporate ...read more
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Q2. How is NAV calculated? What is NAV validation?
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NAV is calculated by subtracting liabilities from assets and dividing by the number of outstanding shares. NAV validation ensures accuracy of the calculated NAV.
• NAV is calculated by taking the market value of assets, subtracting liabilities, and dividing by the number of outstanding shares.

• For example, if a fund has $1,000,000 in assets, $100,000 in liabilities, and 100,000 outstanding shares, the NAV would be ($1,000,...read more
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Q1. Java 8 Features
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Q2. Default Interface
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Q3. Write code for Builder/Factory Pattern, basically anything other than Singleton
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Builder/Factory Pattern is used to create objects with complex initialization logic.
• Builder Pattern separates the construction of a complex object from its representation.

• Factory Pattern creates objects without specifying the exact class of object that will be created.

• Builder Pattern is often used to create immutable objects with many optional parameters.

• Factory Pattern is used when there is a need to create multiple i...read more
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Q4. Why is Redux used in React
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Redux is used in React to manage the application state in a predictable way.
• Centralized state management for React applications

• Predictable state changes with actions and reducers

• Easier debugging and testing of state changes

• Facilitates communication between components
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Q5. Second Highest Salary from Employee Table
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Q6. Filter a List using Streams
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Filter a List using Streams in Java
• Use the filter() method to apply a predicate to each element in the stream

• Use collect() method to convert the stream back to a List

• Example: List<String> names = Arrays.asList("Alice", "Bob", "Charlie"); List<String> filteredNames = names.stream().filter(name -> name.startsWith("A")).collect(Collectors.toList());
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Q1. Write snippet for creating an Entity Class.
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Creating an Entity Class in Java
• Define class with @Entity annotation

• Add @Id annotation for primary key

• Include fields with appropriate data types
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Q2. Different Types of Autowiring
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There are three types of autowiring in Spring: byType, byName, and constructor.
• byType: Spring looks for a bean of the same type and injects it.

• byName: Spring looks for a bean with the same name and injects it.

• constructor: Spring looks for a constructor and injects the arguments.
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Q3. Lazy vs Eager Fetch
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Lazy fetch loads data only when needed, while eager fetch loads all related data upfront.
• Lazy fetch is more efficient for performance as it only loads data when required.

• Eager fetch can lead to performance issues by loading unnecessary data upfront.

• Lazy fetch is the default behavior in JPA, while eager fetch needs to be explicitly specified.

• Example: Lazy fetch can be used for loading a list of items in a shopping cart ...read more
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Q4. Transaction Management in Hibernate
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Transaction management in Hibernate ensures ACID properties for database operations.
• Hibernate provides built-in transaction management support through Session interface.

• Transactions can be managed programmatically using beginTransaction(), commit(), and rollback() methods.

• Hibernate also supports declarative transaction management using annotations like @Transactional.

• Transactions in Hibernate ensure Atomicity, Consiste...read more
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Q5. Attached Entity vs Detached Entity
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Attached entities are actively managed by the persistence context, while detached entities are no longer actively managed.
• Attached entities are being managed by the persistence context and any changes made to them will be automatically synchronized with the database.

• Detached entities are not being managed by the persistence context and changes made to them will not be automatically synchronized with the database.

• Entiti...read more
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Q6. Write Snippet to create two beans
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Creating two beans in Java using Spring framework
• Use @Component annotation to define a bean

• Specify the bean name using @Component("beanName")

• Use @Autowired annotation to inject one bean into another
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Q7. Sort an Employee HashMap
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Sort an Employee HashMap based on keys or values
• Use TreeMap to automatically sort by keys

• Use Comparator to sort by values

• Convert HashMap to List and then sort
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Q1. Kubernetes architecture
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Q2. Basic docker image and kubernetes yaml description
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