Qualigy Tech Interview Questions and Answers

Q1. Introduce Yourself?
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Q2. What are triggers?
Ans. 
Triggers are special stored procedures in databases that are automatically executed or fired when certain events occur.
• Triggers are used to maintain data integrity by enforcing business rules or automating actions.

• They can be set to execute before or after an INSERT, UPDATE, or DELETE operation on a table.

• Examples of triggers include auditing changes to a table, updating a related table when a record is inserted, or en...read more
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Q3. Can we delete the primary key?
Ans. 
No, primary keys should not be deleted as they uniquely identify each record in a database.
• Primary keys are essential for maintaining data integrity and ensuring uniqueness of records.

• Deleting a primary key can lead to data inconsistencies and errors in the database.

• If a primary key needs to be changed, it is better to update it rather than delete it.
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Q4. Difference between drop and delete?
Ans. 
Drop means to remove a database object, while delete means to remove data from a table.
• Drop is used to remove an entire database object like a table, view, or database itself.

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

• Drop operation is irreversible and can lead to loss of data, while delete operation can be rolled back if within a transaction.

• Example: DROP TABLE employees; DELETE FROM employees WHERE a...read more
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Quantitative Aptitude, Logical Reasoning,English grammar

Pseudo code & Coding questions from Array

Q1. Why you want to join our company ?
Ans. 
I want to join your company because of its reputation for innovation and the opportunity to work on cutting-edge software projects.
• Your company has a strong reputation for innovation in the software industry.

• I am impressed by the projects your company has worked on, such as [example project].

• I believe joining your company will provide me with the opportunity to work on cutting-edge software development.

• I am excited abo...read more
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Q2. How you came to know about our company?
Ans. 
I came to know about your company through a job search website.
• I found your company listed on a job search website.

• I saw a job posting for your company on LinkedIn.

• A friend recommended your company to me.
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Q3. Document verification
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