10+ Uniquest Infra Ventures Interview Questions and Answers

CRUD operations in Node.js involve creating, reading, updating, and deleting data from a database.

• Use libraries like Express and Mongoose to handle CRUD operations in Node.js

• Create: Use HTTP POST method to add new data to the database

• Read: Use HTTP GET method to retrieve data from the database

• Update: Use HTTP PUT or PATCH method to modify existing data in the database

• Delete: Use HTTP DELETE method to remove data from the database

Oops concepts are fundamental principles of object-oriented programming that help in organizing and designing code.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability of objects to take on multiple forms or have multiple behaviors.

• Abstraction: Hiding the complex implementation details and showing only the necessary features of an o...read more

Inherited sharing is a feature in Salesforce that allows sharing settings to be inherited from parent records to child records.

• Inherited sharing ensures that child records have the same sharing settings as their parent records.

• It simplifies the management of sharing settings by automatically propagating them to related records.

• Inherited sharing can be enabled for custom objects and standard objects in Salesforce.

• It helps maintain data visibility and access control across rela...read more

Sharing rules are used to extend access to records in Salesforce beyond the organization-wide defaults.

• Sharing rules are used to grant access to records based on criteria or ownership

• They can be used to give access to specific groups or roles

• Sharing rules are evaluated after the organization-wide defaults and manual sharing

• They can be used to grant read-only or read/write access to records

ER Diagram is created by identifying entities, attributes, and relationships in a database.

• Identify entities in the database (e.g. Customer, Product, Order)

• Identify attributes for each entity (e.g. Customer has attributes like Name, Address)

• Identify relationships between entities (e.g. Customer places Order)

Record lock in Salesforce prevents multiple users from editing the same record simultaneously.

• Record lock ensures data integrity by preventing conflicts when multiple users try to edit the same record at the same time.

• When a record is locked, other users can view it but cannot make changes until the lock is released.

• Locks can be set at different levels such as record level, field level, or even at the database level.

• Record locks can be manual or automatic, depending on the co...read more

API testing is a type of software testing that involves testing APIs to ensure they meet functional and performance requirements.

• API testing involves testing the functionality, reliability, performance, and security of APIs

• Load testing is a type of performance testing that involves testing the system's ability to handle a large number of users or requests

• Load testing can be used to identify bottlenecks and performance issues in the system

• Examples of API testing tools include ...read more

Appium is an open-source tool for automating mobile applications.

• Appium is used for end-to-end testing of mobile applications.

• It supports both Android and iOS platforms.

• It uses Selenium WebDriver API to interact with mobile apps.

• Appium can automate native, hybrid, and mobile web apps.

• It supports multiple programming languages like Java, Python, Ruby, etc.

• Appium can be integrated with CI/CD tools like Jenkins for continuous testing.

• It can also be used for parallel testing on m...read more

The setup method is used in Salesforce development to initialize test data and environment before running test methods.

• The setup method is defined in a test class and is executed before each test method.

• It is used to create test data, set up test environment, and perform any necessary setup actions.

• The setup method helps in ensuring that each test method starts with a clean and consistent state.

• It can be used to insert records, create test users, set up permissions, enable fe...read more

Tables can be created in databases using SQL commands like CREATE TABLE.

• Use CREATE TABLE statement in SQL to create a new table

• Specify the table name and column names along with their data types

• Add constraints like primary key, foreign key, etc. if needed

MVC architecture is a design pattern used in software development to separate the application into three main components: Model, View, and Controller.

• Model represents the data and business logic of the application.

• View is responsible for displaying the data to the user.

• Controller acts as an intermediary between Model and View, handling user input and updating the Model accordingly.

• Example: In a web application, the Model could be a database, the View could be the HTML/CSS for...read more

Types of transformations include expression, filter, aggregator, join, lookup, and more.

• Expression transformation: Perform calculations or manipulate data

• Filter transformation: Filter rows based on specified conditions

• Aggregator transformation: Perform aggregate calculations like sum, average, etc.

• Join transformation: Combine data from multiple sources based on a common key

• Lookup transformation: Retrieve data from a relational table based on a lookup condition

WeakHashMap is a subclass of HashMap with weaker references to keys, allowing them to be garbage collected.

• WeakHashMap is suitable for scenarios where keys are not strongly referenced and can be garbage collected.

• HashMap is suitable for scenarios where strong references to keys are needed and should not be garbage collected.

• WeakHashMap is less memory efficient compared to HashMap due to the use of weaker references.