HCL Placement Paper

1. What is paging and pre-paging?
2. What is bubble sort, heap sort, merge sort?
3. What are the Types of DBMS?
4. What are SQL queries.
5. Write a C program Swapping of 2 elements not using the third one and with using the 3rd one.
6. Is java a platform oriented language and why?
7. How Java is over C++.
8. Write a Program in java to create 2 classes and the third one is inheriting the last class?
9. What is circular link list, explain ?
10.What are the different types of joins in dbms, explain ?
11.What is primary key, unique key and difference between them.
12.Can primary key be NULL?
13.What is normalization?