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HashTag Labs Interview Questions and Answers
8 Interview questions
MySQL is a specific implementation of SQL, which is a standardized language for managing databases.
MySQL is a specific relational database management system (RDBMS) that uses SQL as its query language.
SQL (Structured Query Language) is a standardized language for managing databases, used by various RDBMS like MySQL, Oracle, and SQL Server.
MySQL is open-source and widely used for web applications, while SQL is a la...
To delete a column in a database, you can use the ALTER TABLE command.
Use the ALTER TABLE command followed by the DROP COLUMN keyword and the name of the column you want to delete.
Make sure to specify the table name where the column exists.
Example: ALTER TABLE table_name DROP COLUMN column_name;
Order By is a clause in SQL used to sort the result set of a query based on specified columns.
Order By is used to sort the result set in ascending or descending order.
It is typically used at the end of a SELECT statement.
Example: SELECT * FROM table_name ORDER BY column_name ASC;
To set path in CMD, use the 'set' command followed by the path to the desired directory.
Open CMD by searching 'cmd' in the start menu
Use the 'cd' command to navigate to the desired directory
Use the 'set' command followed by 'PATH=C:\desired\directory' to set the path
Tags and elements in HTML are used to structure and format content on a webpage.
Tags are used to define the structure of content on a webpage.
Elements are made up of a start tag, content, and an end tag.
Examples of tags include <p> for paragraphs and <h1> for headings.
Null in a table represents a missing or unknown value, while auto increment in MySQL automatically generates unique values for a column.
Null in a table indicates that a particular field does not have a value assigned to it.
Auto increment in MySQL is used to automatically generate a unique value for a column, typically for primary keys.
For example, a column with auto increment in MySQL will automatically assign a u...
Functions in PHP are blocks of code that can be reused throughout a program. Functions can return values or other functions.
Functions in PHP are defined using the 'function' keyword followed by the function name and parameters.
Functions can return a value using the 'return' keyword.
Functions can also return other functions, known as 'higher-order functions'.
Primary key uniquely identifies each record in a table, while foreign key establishes a link between two tables.
Primary key ensures data integrity by preventing duplicate records.
Foreign key establishes a relationship between tables by referencing the primary key of another table.
Example: In a database of students and courses, student ID can be a primary key in the students table and a foreign key in the courses t...
HashTag Labs Interview Experiences
2 interviews found
Divya Prajapati
Selected
I applied via LinkedIn and was interviewed in Apr 2024. There was 1 interview round.
(1 Question)
- Q1. Technical questions about testing
simran chaudhary
Selected
I applied via Walk-in and was interviewed in May 2023. There were 3 interview rounds.
(8 Questions)
- Q1. Difference between MySQL and Sql
- Ans.
MySQL is a specific implementation of SQL, which is a standardized language for managing databases.
MySQL is a specific relational database management system (RDBMS) that uses SQL as its query language.
SQL (Structured Query Language) is a standardized language for managing databases, used by various RDBMS like MySQL, Oracle, and SQL Server.
MySQL is open-source and widely used for web applications, while SQL is a languag...
- Q2. What are function in PHP and functions return functions
- Ans.
Functions in PHP are blocks of code that can be reused throughout a program. Functions can return values or other functions.
Functions in PHP are defined using the 'function' keyword followed by the function name and parameters.
Functions can return a value using the 'return' keyword.
Functions can also return other functions, known as 'higher-order functions'.
- Q3. What is tag and elements in Html
- Ans.
Tags and elements in HTML are used to structure and format content on a webpage.
Tags are used to define the structure of content on a webpage.
Elements are made up of a start tag, content, and an end tag.
Examples of tags include <p> for paragraphs and <h1> for headings.
- Q4. How to delect coloum in database
- Ans.
To delete a column in a database, you can use the ALTER TABLE command.
Use the ALTER TABLE command followed by the DROP COLUMN keyword and the name of the column you want to delete.
Make sure to specify the table name where the column exists.
Example: ALTER TABLE table_name DROP COLUMN column_name;
- Q5. What is Order By and why used ?
- Ans.
Order By is a clause in SQL used to sort the result set of a query based on specified columns.
Order By is used to sort the result set in ascending or descending order.
It is typically used at the end of a SELECT statement.
Example: SELECT * FROM table_name ORDER BY column_name ASC;
- Q6. What is primary key & foreign key ?
- Ans.
Primary key uniquely identifies each record in a table, while foreign key establishes a link between two tables.
Primary key ensures data integrity by preventing duplicate records.
Foreign key establishes a relationship between tables by referencing the primary key of another table.
Example: In a database of students and courses, student ID can be a primary key in the students table and a foreign key in the courses table.
- Q7. What is null in table and what is auto increment in MySQL
- Ans.
Null in a table represents a missing or unknown value, while auto increment in MySQL automatically generates unique values for a column.
Null in a table indicates that a particular field does not have a value assigned to it.
Auto increment in MySQL is used to automatically generate a unique value for a column, typically for primary keys.
For example, a column with auto increment in MySQL will automatically assign a unique...
- Q8. Who to set path in CMD
- Ans.
To set path in CMD, use the 'set' command followed by the path to the desired directory.
Open CMD by searching 'cmd' in the start menu
Use the 'cd' command to navigate to the desired directory
Use the 'set' command followed by 'PATH=C:\desired\directory' to set the path
(1 Question)
- Q1. What's your salary expectations
Skills evaluated in this interview
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Software Engineer Interview Questions & Answers
Thinkitive Technologies
Anonymous
posted on 4 May 2019
I applied via Naukri.com and was interviewed in Oct 2018. There were 3 interview rounds.
Interview Questionnaire
3 Questions
- Q1. Asked me to draw spring mvc architecture and about collection framework.
- Q2. Asked me to write the logic for pattern.
- Ans.
This question involves creating a specific pattern using loops and conditional statements in programming.
Identify the desired pattern (e.g., asterisks, numbers).
Use nested loops: outer loop for rows, inner loop for columns.
Control the output format with conditional statements.
Example: For a pyramid pattern, increase spaces and asterisks in each row.
- Q3. Asked me on core java.
Interview Preparation Tips
Skills: Communication
Duration: <1 week
Software Engineer Interview Questions & Answers
Thinkitive Technologies
Arpita Raut
posted on 16 Aug 2024
(2 Questions)
- Q1. What is oops in python
- Q2. What is ternary operant in python
- Ans.
Ternary operator in Python is a conditional expression that evaluates to a value based on a condition.
Ternary operator is written as 'value_if_true if condition else value_if_false'
It is a shorthand way of writing an if-else statement in a single line
Example: x = 10 if a > b else 20
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Thinkitive Technologies
Anonymous
posted on 27 Aug 2024
I applied via Job Portal
(2 Questions)
- Q1. All about core java
- Q2. Front end and My Sql
Selected
I appeared for an interview in Nov 2024, where I was asked the following questions.
- Q1. What is Go Module?
- Ans.
Go Modules are a dependency management system for Go programming language, enabling versioning and isolation of packages.
Introduced in Go 1.11 to manage dependencies more effectively.
Allows developers to define module dependencies in a 'go.mod' file.
Supports semantic versioning, making it easier to manage package versions.
Modules can be versioned, allowing for reproducible builds.
Example: 'module example.com/my/module'...
- Q2. What is difference between Goroutine and Thread.
- Ans.
Goroutines are lightweight, managed by Go runtime, while threads are OS-level, heavier, and managed by the OS.
Goroutines are cheaper in terms of memory and resources compared to threads.
Goroutines are multiplexed onto a smaller number of OS threads, allowing for efficient concurrency.
Creating a goroutine is as simple as using the 'go' keyword, e.g., 'go myFunction()'.
Threads require more overhead for creation and manag...
There are three sections: -
1. Quants
2. English
3. Reasoning
All sections are accessible medium but you have maintained the speed and accuracy.
after that coding snippet are in java/python.
Code snippets are there in coding sections.
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Dec 2024. There were 2 interview rounds.
Based on my CV, they assigned me a task related to data migration.
(2 Questions)
- Q1. Project reviews
- Q2. Attendance regarding
Rajveer Choubisa
Selected
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. React hooks related How to use them
- Ans.
React hooks are functions that let you use state and lifecycle features in functional components.
useState: Allows you to add state to functional components. Example: const [count, setCount] = useState(0);
useEffect: Lets you perform side effects in function components. Example: useEffect(() => { document.title = `Count: ${count}`; }, [count]);
useContext: Provides a way to pass data through the component tree without ...
- Q2. About web socket real time messaging
- Q3. About react router dom
Interview Preparation Tips
- Q1. What is the main difference btwn java and java script?
- Q2. Differentiate thread and process
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