Basic SQL Interview Questions for Freshers 1. What is the difference between a primary key and a unique key? Primary Key: The primary key is used to uniquely identify every record in a table. It ensures that NULL values are not present in the table. Unique Key: Unique key also identifie...
PostgreSQL Backup Interview Questions 44. How can you take the backup of a database? PostgreSQL permits the user to take a backup of the database by using “pg_dump”. To perform a backup on a plain-text SQL file, login into your database server and implement the following command: pg...
SQL is a required skill since the Relational Database Management System (RDBMS) is the most often used company database. This blog on SQL Interview Questions and Answers is intended to help you through a variety of SQL questions based on topics such as MS SQL Server, MySQL, and others. Th...
A nasty question, do not give the salary number to them exactly as every company have its own structure of salary. Telling your salary number may lead to loss of the interview. If you are fresher then instead, say something like, That's a tough question. Can you tell me the ...
In this blog post, you are going to find a list of top 25 SQL interview questions and answers about indexes which have been often asked.
That’s why we’ve put together this page filled with the top SQL interview questions for DBA and QA engineers. Check out our top SQL interview questions for DBA and QA engineers! As a QA engineer, learning SQL is a must. After all, understanding databases and writing SQL queries is esse...
The key element to clear a System Design interview is that you should have a clear understanding of the approach that you are taking while designing a particular system. For instance, in a system, if you choose to store the data in a No SQL database, you should be clear with the ...
SQL: It is referred as Structured Query Language.• Only simple IF / Else statements.• Through SQL you can interact with database through ADO.NET• In SQL you can execute a line of code• It can run only on windowsPL/SQL: It is referred as Procedure Language / Structure Query ...
SQL Server Interview Questions A list of top frequently askedSQL Serverinterview questions and answers are given below. 1) What is SQL Server? SQL Server is the RDBMS system provided by Microsoft which functions mainly as retrieving and storing the data as per user request. Sometimes it is mist...
The top 90 most popular SQL interview questions 评分: The top 90 most popular SQL interview questions SQL面试最常见的90个问题及答案。 SQL Interview 2018-11-22 上传 大小:479KB 所需: 9积分/C币 立即下载 Top-k Structure Holes Detection Algorithm in Social Network ...