20+ SSK Group Interview Questions and Answers

DML commands are Data Manipulation Language commands used to manage data in a database.

• DML commands include INSERT, UPDATE, DELETE, and SELECT.

• INSERT is used to add new rows of data into a table.

• UPDATE is used to modify existing data in a table.

• DELETE is used to remove rows of data from a table.

• SELECT is used to retrieve data from a database.

DDL commands are Data Definition Language commands used to define, modify, and delete database objects.

• DDL stands for Data Definition Language

• Common DDL commands include CREATE, ALTER, and DROP

• CREATE is used to create new database objects like tables

• ALTER is used to modify existing database objects

• DROP is used to delete database objects

Set is a collection of unique elements, List is an ordered collection of elements, and Map is a collection of key-value pairs.

• Set does not allow duplicates, e.g. a set of integers {1, 2, 3, 4, 5}

• List maintains the order of elements, e.g. a list of names ['John', 'Mary', 'Bob']

• Map stores key-value pairs, e.g. a map of phone numbers {'John': '123-456-7890', 'Mary': '987-654-3210'}

To train a beginner in Java, start with basic concepts and gradually introduce programming concepts.

• Start with basic concepts like data types, variables, and operators

• Introduce control structures like if-else statements and loops

• Teach object-oriented programming concepts like classes and objects

• Encourage practice and experimentation with simple programs

• Provide resources like online tutorials and exercises

• Offer guidance and feedback on their code

Main method is static because it needs to be called without creating an instance of the class.

• Static methods can be called without creating an instance of the class

• Main method is the entry point of the program

• Main method must have a specific signature: public static void main(String[] args)

• args is an array of strings that can be used to pass command line arguments to the program

Microservices are a software architecture approach where applications are built as a collection of small, independent services.

• Advantages include increased scalability, flexibility, and resilience

• Each service can be developed, deployed, and scaled independently

• Allows for easier maintenance and updates

• Basic architecture involves breaking down a monolithic application into smaller, self-contained services

• Services communicate with each other through APIs

To develop a Spring Boot application, follow these steps:

• Create a new Spring Boot project using Spring Initializr

• Define the necessary dependencies in the pom.xml file

• Create the necessary Java classes and packages

• Define the application properties in the application.properties file

• Run the application using the Spring Boot Maven plugin or by running the main class

• Test the application using a web browser or a REST client

JDK is a development kit, JRE is a runtime environment, and JVM is a virtual machine that executes Java code.

• JDK includes JRE and development tools

• JRE includes JVM and necessary libraries

• JVM interprets compiled Java code into machine code

• JDK is needed for developing Java applications

• JRE is needed for running Java applications

• Multiple JVMs can run on a single machine

Loan interest can be identified by examining the terms of the loan agreement and calculating the interest rate applied to the principal amount.

• Identify the stated interest rate in the loan agreement

• Calculate the interest amount by multiplying the principal amount by the interest rate and the time period

• Consider any additional fees or charges that may affect the total interest paid

Program to check if a number is prime or not.

• A prime number is only divisible by 1 and itself.

• Loop through numbers from 2 to n-1 and check if n is divisible by any of them.

• If n is divisible by any number, it is not prime.

• If n is not divisible by any number, it is prime.

Loan life cycle refers to the stages a loan goes through from application to repayment.

• Loan application: Borrower applies for a loan.

• Loan approval: Lender reviews application and approves loan.

• Loan disbursement: Lender provides funds to borrower.

• Loan repayment: Borrower makes scheduled payments to repay the loan.

• Loan closure: Borrower repays the full loan amount and loan is closed.

• Example: A borrower applies for a mortgage, gets approved, receives funds, makes monthly payment...read more

Creating a microservice involves designing and implementing a small, independent service that performs a specific function.

• Identify the specific function or business logic that the microservice will handle

• Design the API endpoints and data models for the microservice

• Implement the microservice using a framework like Spring Boot or Node.js

• Test the microservice thoroughly to ensure it functions correctly

• Deploy the microservice to a containerized environment like Docker

OTBI report stands for Oracle Transactional Business Intelligence report, used for analyzing and reporting on data in Oracle Cloud applications.

• OTBI reports provide real-time insights into business operations

• Users can create custom reports using OTBI subject areas

• OTBI reports can be scheduled for automated delivery

• OTBI reports can be accessed through Oracle Cloud applications such as ERP Cloud, HCM Cloud, and CX Cloud

BI report stands for Business Intelligence report, which is a document that presents data analysis and insights to help make informed business decisions.

• BI report is a document that provides insights and analysis on business data.

• It helps in making informed decisions by presenting key metrics and trends.

• BI reports often include visualizations such as charts and graphs to make data easier to understand.

• Examples of BI reports include sales performance reports, marketing campaig...read more

Core banking refers to the basic banking functions such as deposits, loans, and payments that are essential for a bank's operations.

• Core banking systems are the software and hardware used by banks to process transactions and manage customer accounts.

• These systems typically include modules for customer information, accounts, loans, deposits, and payments.

• Core banking systems help banks streamline their operations, improve efficiency, and provide better customer service.

• Example...read more

Load balancing and messaging are crucial for scalability and reliability in microservices architecture.

• Load balancing ensures even distribution of traffic among multiple instances of a service.

• Messaging enables asynchronous communication between microservices.

• Load balancing can be achieved through software or hardware solutions like NGINX, HAProxy, or AWS ELB.

• Messaging can be implemented using message brokers like RabbitMQ, Apache Kafka, or AWS SQS.

• Load balancing and messagin...read more

Pattern programs in PHP involve printing a specific pattern using loops and conditional statements.

• Use nested loops to print the desired pattern

• Utilize conditional statements to control the pattern output

• Experiment with different loop structures to achieve various patterns

Laravel language uses PHP as its programming language.

• Laravel is a PHP framework

• Uses PHP syntax and features

• Follows MVC architecture

• Provides built-in features like authentication, routing, and sessions

Transaction management in microservices is crucial for ensuring data consistency and integrity.

• Each microservice should have its own database to manage transactions independently.

• Use distributed transactions or two-phase commit protocol to ensure atomicity across multiple microservices.

• Implement compensating transactions to handle failures and rollbacks.

• Consider using event-driven architecture to decouple services and improve scalability.

• Use a centralized logging and monitori...read more

Distributed tracing is a technique used to monitor and debug microservices architecture.

• It involves tracking requests as they flow through multiple services

• Each service adds its own trace information to the request

• This allows for easy identification of performance bottlenecks and errors

• Tools like Zipkin and Jaeger can be used for distributed tracing

AI, Cloud, and Blockchain are technologies revolutionizing the financial industry with automation, scalability, and security.

• AI: Used for fraud detection, customer service chatbots, and personalized financial recommendations.

• Cloud: Enables secure storage and access to financial data from anywhere, reducing infrastructure costs.

• Blockchain: Provides transparent and immutable record-keeping for transactions, improving security and trust in financial processes.

An entity in Spring Boot represents a table in a database and is used to map data from the database to Java objects.

• Entities are typically annotated with @Entity and represent a table in a database.

• Fields in an entity class represent columns in the database table.

• Entities can have relationships with other entities using annotations like @OneToOne, @OneToMany, @ManyToOne, @ManyToMany.

• Entities are managed by the EntityManager in Spring Boot for CRUD operations.

• Example: @Entity ...read more

An enumerator is a type that allows you to iterate through a collection of items, such as an array or list.

• Enumerators are commonly used in programming languages like C# to loop through collections of data.

• They typically have methods like MoveNext() to move to the next item in the collection and Current to access the current item.

• Enumerators can be used in foreach loops to easily iterate through all items in a collection.