13. What are all the different normalizations? The normal forms can be divided into 5 forms, and they are explained below -. First Normal Form (1NF):. This should remove all the duplicate columns from the table.
Suitable for all skill levels, these questions are essential for effective preparation. Secure the free PDF to access all 172 questions and guarantee your preparation for your SQL interview. This guide is crucial for enhancing your readiness and self-assurance....
Full join:In MySQL, the use of full joins is done to return all the records at that time when a match is found between two or more tables. Hence, the following returns all the rows from the table on the left-hand side along with the tables on the right-hand side. 14) How can yo...
Want more SQL interview prep? Try your hand with this free practice question: Cocoa Confections is a small bakery that sells brownies, cookies, pies, and other delicious treats to customers online. It keeps records of all of its online sales in an SQL database that is automatically populated...
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Softwaretesting-QuestionsandAnswers-SQLInterviewQuestions Q.WhatdoesSQLstandfor? A.StructuredQueryLanguage Q.Whatisaprimarykey? A.Primarykey:EachrowofthedatainatableuniquelyidentifiedbyaPrimaryKey Thecolumn(columns)thathascompletelyuniquedatathroughoutthetableis ...
2. Confirm all SQL services are stopped on Node B. 3. Upgrade the SQL Server 2008 instance on Node B. 4. Reboot node B. 5. Unfreeze the service group on node A. 6. Fail over the service group to Node B. 7. After the service group comes online, freeze the service group on Node...
Frequently Asked SQL Interview Questions 1. What is a Database? Adatabase refers to a structured data collection that can be stored, managed, and retrieved from a remote or local computer system. Databases can become pretty complex and are built with a fixed design and modeling approach. ...
Generally there is a section in the beginning of the books online titled "What's New", which has all such information. Of course, reading just that is not enough, you should have tried those things to better answer the questions. Also check out the section titled "Backward Compatibility" ...
Advanced PL/SQL Interview Questions Let's now explore some advanced interview questions in case you are applying for a more senior role that requires more experience. 10. What are the methods of optimizing performance in PL/SQL? Minimizing context switches between SQL and PL/SQL is crucial for...