The following are the most popular and useful SQL interview questions and answers for fresher and experienced candidates. These questions are created specifically to familiarise you with the types of questions you might encounter during your SQL interview. According to our experiences, good interviewers ...
Top 35 Database Testing Interview Questions and Answers How to Find the Second Highest Salary in SQL ByAkshay|Last updated on October 3, 2024|55416 Views Did You Know? PL/SQLcode can include comments inside it starting with /* and ending with */ like in C programming language. This allows...
SELECT*FROMTable_NameWHERERownum < = N ; We can easily retrieve the first five rows of any table by using the Rownum keyword. We have to use the 'Less than equals to' comparison operator for this operation. Here, N defines the number of rows to be shown in the output. Example: The ...
Frequently asked SQL Server Interview Questions and Answers for freshers, intermediate, and experienced which will definitely ace your SQL Server Interview.
Along with constant scanning andpenetration testing, security methods like input validation, sanitization, prepared statements, and parameterized SQL queries are crucial for preventingSQL injectionattacks. Additionally, quick defenses like a firewall would help to safeguard the SQL database. ...
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 essential for testing the functionality and performance of any enterprise application. For DBAs, SQL skills are even more...
Performs testing for functions such as triggers, views, and basic queries. 8. Explain black box testing. Hide Answer Black box testing is a method that tests the interface of the database. It verifies incoming data, mapping details, and data used for query functions. Here the tester provides...
Basic & Advanced SQL Server Interview Questions And Answers Let’s start with common SQL Interview Questions first. 1. What is a Database? A database is a collection of information in an organized form for faster and better access, storage, and manipulation. It can also be defined as a co...
Summary – Top 50 Tricky SQL Queries for Interview The SQL queries provided here should work on popular databases like MySQL, SQL Server, and Oracle with only minor adjustments. These queries use common SQL commands like SELECT, FROM, WHERE, and others that are widely supported. Still, here ...
Top PL/SQL Interview Questions with Examples to Help You Prepare For The Upcoming Interview: What is PL/SQL? PL/SQL (Procedural Language/SQL) is basically a procedural extension of Oracle – SQL. PL/SQL helps the user to develop complex database applications using control structures, procedures...