Revivo Technologies Interview Questions and Answers

Basic JPA construction involves creating entity classes, defining relationships, and configuring persistence settings.

• Create entity classes with @Entity annotation

• Define relationships between entities using @OneToOne, @OneToMany, @ManyToOne, @ManyToMany annotations

• Configure persistence settings in persistence.xml file

• Use EntityManager to interact with the database

Arrays store elements in contiguous memory locations, while linked lists store elements in nodes with pointers to the next node.

• Arrays have constant time access to elements using index, while linked lists have linear time access.

• Arrays have fixed size, while linked lists can dynamically grow and shrink.

• Insertions and deletions are faster in linked lists as compared to arrays.

• Example: Array - ['apple', 'banana', 'cherry...read more

I possess the skills, experience, and passion to drive national accounts and foster strong client relationships effectively.

• Proven track record in managing national accounts, increasing revenue by 30% in my previous role.

• Strong relationship-building skills, demonstrated by maintaining a 95% client retention rate.

• Expertise in strategic planning and execution, successfully launching a new product line that captured 20% m...read more

HTTP protocol is a set of rules for transferring data over the internet. Request parameters are data sent with an HTTP request.

• HTTP protocol stands for Hypertext Transfer Protocol and is used for communication between web servers and clients.

• Request parameters are key-value pairs sent in the URL or body of an HTTP request to provide additional information to the server.

• Example: In a GET request, parameters can be inclu...read more

Fetching from services and repositories involves making API calls to retrieve data.

• Use HTTP requests to communicate with services and repositories

• Utilize libraries like Axios or Fetch for making API calls

• Handle responses asynchronously to retrieve data

• Parse and process the data received from services and repositories

• Implement error handling for failed requests

Merge Sort is a divide and conquer algorithm that divides the input array into two halves, sorts them recursively, and then merges them back together.

• Divide the array into two halves

• Recursively sort each half

• Merge the sorted halves back together

• Time complexity is O(n log n)

• Example: [38, 27, 43, 3, 9, 82, 10] -> [38, 27, 43] [3, 9, 82, 10] -> [38, 27] [43] [3, 9] [82, 10] -> [27, 38] [43] [3, 9] [10, 82] -> ...read more