Define the following terms 19. (i) Database 20. (ii) Database Management System 21. (iii) Data Model 22. (iv) Scheme 23. (v) Data independence

1 Answers  

---

What do you understand by unique key?

0 Answers  

---

If I delete a table and then rollback it, do the index on the table remains? What if I drop the table and roll back?Do index on the table remains? What if I truncate the table and roll back? Do the index on the table remains

2 Answers   Wipro,

---

Explain 5nf?

0 Answers  

---

Describe the four types of indexes.

0 Answers  

---

What's the difference between delete and truncate ?

0 Answers  

---

Explain a join between tables?

0 Answers  

---

What's difference between dbms and rdbms ?

0 Answers  

---

What is the use case where we can use stretch database?

0 Answers  

---

When the SYSTEM TABLESPACE can be made off-line ?

2 Answers  

---

What is a data type in a database?

0 Answers  

---

what is dba_segment

4 Answers  

---