SQL Interview Questions1. What is Pattern Matching in SQL? SQL pattern matching provides for pattern search in data if you have no clue as to what that word should be. This kind of SQL query uses wildcards to match a string pattern, rather than writing the exact word. The LIKE operator...
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 identify every record in a table uniquely. It ensures that NULL values are not present in the table. Unique Key: The unique key also identifies...
You need at least four drives for RAID 10. This type of RAID is probably the best compromise for a database server.Note :- It's difficult to cover complete aspect of RAID in this book. It's better to take some decent SQL SERVER book for in detail knowledge, but yes from interview ...
Database lock tell a transaction, if the data item in questions is currently being used by other transactions. SQL INTERVIEW QUESTIONS AND ANSWERS 10 | P a g e What are the type of locks ? Shared Lock When a shared lock is applied on data item, other transactions can only read the ite...
SQL Server Interview Questions and Answers for Freshers 1. Compare SQL Server with Oracle.dsj 2. How can SQL Server instances be hidden? To hide aSQL Server instance, we need to make a change in SQL Server Configuration Manager. To do this, we have to follow the below steps: ...
SQL Interview Questions Listed below are various SQL interview questions and answers that reaffirms your knowledge about SQL and provide new insights and learning about the language. Go through these SQL interview questions to refresh your knowledge before any interview. ...
This post will undoubtedly give you some insights if you’re looking for questions and answers to use while you prepare for a SQL interview. In a job interview for a data engineer, data analyst,database administrator, etc., the following questions should be expected. ...
scripting, and markup languagessurvey made by StackOverflow in 2022. Therefore SQL is essential and should not be missing from ourpreparation for technical interviews. We will start with some of the most fundamentalSQL interview questionsabout databases and increase the difficulty level along the way...
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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.