Sealmatic Interview Questions and Answers

Migration in Laravel is the process of managing database schema changes using PHP code.

• Migration allows developers to define database tables and their structure using PHP code instead of SQL.

• It helps in version control of database schema changes and makes it easier to collaborate with other developers.

• Migrations can be rolled back to previous states if needed, making database changes reversible.

• Example: 'php artisan make:migration create_users_table' creates a new migration f...read more

I have integrated payment gateways like PayPal, Stripe, and Square into e-commerce websites.

• Integrated PayPal payment gateway for seamless checkout process

• Implemented Stripe API for secure credit card transactions

• Configured Square payment gateway for in-person and online payments

Some common hooks used in React.js are useState, useEffect, useContext, and useRef.

• useState - for managing state in functional components

• useEffect - for handling side effects in functional components

• useContext - for accessing context in functional components

• useRef - for accessing DOM elements or values in functional components

Polymorphism in OOPs allows objects of different classes to be treated as objects of a common superclass.

• Polymorphism allows methods to be called on objects of different classes that implement the same interface or superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Animal superclass with methods like eat() and sleep(). Dog and Cat subclasses can override these methods with their own implementations.

MySQL injections are a type of cyber attack where malicious SQL statements are inserted into an entry field for execution.

• MySQL injections occur when an attacker inserts malicious SQL code into a query to manipulate the database.

• Attackers can use MySQL injections to access, modify, or delete data in the database.

• Preventing MySQL injections involves using parameterized queries and input validation.

• Example: SELECT * FROM users WHERE username = 'admin'; DROP TABLE users;

Normalization in DBMS is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization involves breaking down a database into smaller, more manageable tables.

• It helps in reducing data redundancy by storing data in a structured way.

• Normalization ensures data integrity by minimizing data anomalies.

• There are different normal forms like 1NF, 2NF, 3NF, BCNF, etc.

• Example: In a database of students, instead of storing student details in m...read more

I am driven by the desire to create intuitive and user-friendly designs that solve real-world problems.

• I am passionate about understanding user needs and behaviors

• I enjoy collaborating with cross-functional teams to develop innovative solutions

• I am constantly learning and staying up-to-date with industry trends and best practices

• I find satisfaction in seeing my designs come to life and positively impacting users

• I am motivated by the challenge of balancing aesthetics and funct...read more