Explain about the hierarchical model of the database?

0 Answers  

---

What are the main phases of database development?

0 Answers  

---

what is difference between primary key and unique key ?

2 Answers  

---

In which database can extended stored procedures be added?

0 Answers  

---

How to generate OIDS

0 Answers  

---

---

What are triggers? How many triggers you can have on a table?

2 Answers   Ramco,

---

You have a table with three columns: amount1, amount2, and amount3 in a single row only one of these three columns will have a value and the other two will be null. Write a sql query to retrieve the values from these columns?

0 Answers  

---

Given an employee table, how would you find out the second highest salary?

9 Answers  

---

Explain the cube operator?

0 Answers  

---

Explain the process of the user request and data generating?

0 Answers  

---

I HAVE A PI ON COL A THE NEXT DAY I WANT CHANGE THE PI ON COL B? PLS SEND ME THE ANS

0 Answers   IBM,

---

how will I find the duplicate rows count from employees tablein oracle.

2 Answers  

---