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50 SQL Server Interview Questions Guaranteed to Help You.docx

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Java Interview question:

1- It is possible to create an object without object reference.
2- Object reference occupies memory
3-Null is a string literal
4-Instance variables are stored in stack area.
5-Local variable can be accessed by using class name also.
6-Local Variable scope is based on access modifiers
7-Only one copy of class variable is created for all objects.
8-Default value of boolean is true.
9-This keyword is called as an object reference.
10-Array index begins with 1.
11-Object reference is also called as primitive type variable
12-Methods cannot be overloaded in the same class.
13-Constructors are used to initialize instance variables
14-A class can have only one static block.
15-A class can have any number of blocks

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Here are the top 20 DBMS (Database Management System) interview questions:

1. What is a DBMS, and why is it used? 💡📚

2. Explain the ACID properties in a DBMS. 🔄🔒

3. What is normalization, and why is it important? 📊🔍

4. Differentiate between a primary key and a foreign key. 🔑🔗

5. What are the different types of database relationships? 💑👪

6. Explain the concept of indexing in databases. 📈🔍

7. What is a transaction in a DBMS, and what are its properties? 🔄💼

8. What is a database schema? 📐📝

9. Explain the difference between SQL and NoSQL databases. 📊🆚

10. What is a stored procedure, and what are its advantages? 📁💡

11. How does database security work, and what measures are taken? 🔒🛡

12. What is data redundancy, and how can it be avoided? 📈❌

13. Explain the concept of data warehousing. 🏠📊

14. What is a view in a database, and why is it used? 👀📝

15. What is a trigger in a DBMS, and how is it different from a stored procedure? 🚀🔍

16. Explain the different types of database models. 📈🎭

17. What is a cursor in a database, and how is it used? 🖱🔄

18. What is database replication, and why is it important? 📋🔄

19. How does database optimization work, and why is it necessary? 🚀💡

20. What is a deadlock in a database, and how can it be prevented? 🔒❌

These questions cover a range of topics in DBMS and can help you prepare for your next interview!

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