20+ Zomato Interview Questions and Answers

Managing team requires clear communication, delegation of tasks, and conflict resolution skills.

• Establish clear goals and expectations for the team

• Delegate tasks based on team members' strengths and skills

• Encourage open communication and active listening

• Address conflicts promptly and objectively

• Foster a positive team culture and celebrate successes

• Provide regular feedback and opportunities for growth

• Lead by example and be a role model for the team

To run a callback function after state change in React, use useEffect hook.

• Import useEffect hook from 'react'.

• Use useEffect with dependency array containing the state variable.

• Pass the callback function as the second argument to useEffect.

• The callback function will run after every state change.

My SWOT analysis revealed my strengths in leadership and communication, opportunities for growth in project budgeting, weaknesses in time management, and threats from external competition.

• Strengths: leadership, communication

• Weaknesses: time management

• Opportunities: project budgeting

• Threats: external competition

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• Extensive experience in software development

• Strong knowledge of programming languages and frameworks

• Proficient in problem-solving and debugging

• Ability to design and implement complex software systems

I perform various types of data analysis including statistical analysis, trend analysis, and predictive modeling.

• Statistical analysis to identify patterns and trends in data

• Trend analysis to track changes over time and identify potential future outcomes

• Predictive modeling to forecast future trends and outcomes

• Data visualization to present findings in a clear and concise manner

• Root cause analysis to identify underlying issues and develop solutions

• Regression analysis to identif...read more

TDS stands for Tax Deducted at Source and is a system of collecting income tax in India.

• TDS is a system of collecting income tax in India

• It is deducted at the source of income

• The person making the payment is responsible for deducting TDS

• TDS rates vary depending on the type of payment and the income of the recipient

• TDS is applicable to salaries, interest, rent, commission, and other payments

• TDS certificates are issued to the deductee as proof of tax payment

Delete removes rows from a table, truncate removes all rows from a table, and drop removes a table from the database.

• Delete is a DML command that removes specific rows from a table.

• Truncate is a DDL command that removes all rows from a table but keeps the table structure.

• Drop is a DDL command that removes an entire table from the database.

• Delete can be rolled back, truncate cannot be rolled back, and drop cannot be rolled back.

• Example: DELETE FROM table_name WHERE condition;

• E...read more

The == operator compares values after type coercion, while === operator compares values and types.

• The == operator returns true if the operands are equal after type coercion.

• The === operator returns true if the operands are strictly equal without type coercion.

• Type coercion is the automatic conversion of a value from one data type to another.

• For example, 1 == '1' returns true because the string '1' is coerced to the number 1.

• However, 1 === '1' returns false because the operand...read more

Box plots are a graphical representation of data distribution using quartiles and outliers.

• Box plots show the median, quartiles, and outliers of a dataset.

• They are used to identify skewness, outliers, and the spread of data.

• They are also useful for comparing multiple datasets.

• Box plots can be created using software like Excel or R.

Virtual DOM is a programming concept where a virtual representation of the actual DOM is created and manipulated for faster rendering.

• Virtual DOM is used in ReactJS to improve performance.

• It allows for efficient updates to the actual DOM by only updating the necessary changes.

• The virtual DOM is a lightweight copy of the actual DOM.

• Changes made to the virtual DOM are compared to the previous version to determine what needs to be updated in the actual DOM.

• This reduces the numbe...read more

Refs are a way to access and manipulate DOM elements or React components directly.

• Refs are created using React.createRef() or callback refs.

• They can be used to access and modify the properties and methods of a component or DOM element.

• Refs should be used sparingly and only when necessary, as they can make code harder to understand and maintain.

• Example:

• Example: const inputRef = React.createRef();

Measures and attributes are two important concepts in data analysis.

• Measures are quantitative values that can be analyzed, such as sales revenue or customer satisfaction scores.

• Attributes are descriptive characteristics of data, such as product categories or customer demographics.

• Measures and attributes are often used together to gain insights into data and make informed business decisions.

• For example, a business analyst might analyze sales revenue (measure) by product catego...read more

ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database or data warehouse.

• Extract: Data is extracted from multiple sources such as databases, files, APIs, etc.

• Transform: Data is cleaned, validated, and transformed into a consistent format to meet the requirements of the target system.

• Load: The transformed data is loaded into a target database or data warehouse...read more

SOLID Principles are a set of design principles that help in creating maintainable and scalable software.

• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open-Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes must be substitutable for their base types.

• I - Interface Segregation Principle: Clients should not be forced to depend on interfaces they do not u...read more

Using WHERE and HAVING clause in SQL

• WHERE clause is used to filter rows based on a specified condition

• HAVING clause is used to filter groups based on a specified condition

• WHERE clause is applied before the data is grouped, while HAVING clause is applied after the data is grouped

Approaching an employee for a referral

• Introduce yourself and explain your interest in the company

• Express your admiration for the employee's work and explain why you believe they would be a good referral

• Ask if they would be willing to refer you and provide any necessary information

• Thank them for their time and consideration

Creating and distributing LUN involves configuring storage arrays and assigning them to servers.

• Configure storage arrays with required capacity and performance levels

• Assign LUNs to specific servers using storage management software

• Ensure proper zoning and masking to restrict access to LUNs

• Monitor and manage LUNs for optimal performance and capacity utilization

I have previous experience working as a data analyst intern at Company X.

• Worked on analyzing sales data to identify trends and patterns

• Utilized SQL and Excel to manipulate and analyze data

• Created visualizations and reports to present findings to stakeholders

Foreign key is a field in a database table that links to a primary key in another table.

• Foreign key ensures referential integrity between related tables

• It helps maintain relationships between tables in a database

• Example: In a database of students and courses, student_id in courses table can be a foreign key referencing id in students table