What are different types of triggers?

0 Answers  

---

What are all ddl commands?

0 Answers  

---

What is the difference between CHAR and VARCHAR2? If VARCHAR2 serves the uses of CHAR why CHAR is still used and not been discarded yet?

9 Answers   Oracle,

---

What is a database? Explain

0 Answers  

---

How do I write a sql query in pgadmin 4?

0 Answers  

---

---

Is mariadb a nosql database?

0 Answers  

---

what are the types of subquery? : Sql dba

0 Answers  

---

What is the difference between UNIQUE CONSTRAINT and PRIMARY KEY? 1. There is no difference. 2. A PRIMARY KEY cannot be declared on multiple columns. 3. A UNIQUE CONSTRAINT cannot be declared on multiple columns. 4. A table can have multiple PRIMARY KEYS but only one UNIQUE CONSTRAINT. 5. A table can have multiple UNIQUE CONSTRAINTs but only one PRIMARY KEY.

7 Answers   Satyam,

---

What happens if a procedure that updates a column of table X is called in a database trigger of the same table ?

1 Answers  

---

Is there any restriction on the use of union in embedded sql?

0 Answers  

---

Store procedure will return a value?

4 Answers   eMids,

---

what is a field in a database ? : Sql dba

0 Answers  

---