Databases Interview Questions
Questions Answers Views Company eMail

What is a Database Schema and Why is It Important?

1 449

Explain the Difference Between a Primary Key and a Foreign Key.

1 359

What is CRUD Operations?

1 351

What are the Different Types of Joins and How do They Work?

1 415

How to Ensure Data Integrity in a Relational Database?

373

Explain the Difference Between OLTP and OLAP Databases.

1 372

What are the ACID Properties in a Database and Why are They Important?

1 409

Describe the Process of ETL (Extract, Transform, Load).

1 409

What is a Data Warehouse and How is it Different from a Traditional Database?

1 428

10 How to Handle Data Migration Between Different Databases?

1 450

What is a Relational Database and How does it Differ from a NoSQL Database?

1 551

Explain the Importance of Data Normalization.

1 478

How to Perform Data Cleaning and Preprocessing?

1 511

What are the Common SQL Functions Used for Data Aggregation?

1 488

Describe the Process of Connecting a Database to a Data Analysis Tool.

1 481


Un-Answered Questions { Databases }

What is journaling in mongodb?

1


Differentiate nested loop, hash join and merge join.

841


Will you be able to store pictures in the database?

921


How do I drop a collection in mongodb?

1


How to find the login name linked to a given user name?

725


Point the difference between translate and replace?

857


What is the difference between "as" and "is" in an oracle stored procedure?

780


What is a user defined variable?

721


What are the steps you must follow to hide sql server instances?

757


How to lock and unlock a user account in oracle?

876


How can you export the table as an xml file in mysql?

698


What is the need for group functions in sql?

804


What is the security model used in sql server 2005?

747


I need a function for a train ticket reservation please answer it thanks in advance

804


Who owns mongodb?

1