Database-Management-System
August 29, 2024Database-Management-System
August 29, 2024Database-Management-System
| Question 751 |
A table joined with itself is called
| join | |
| self join | |
| outer join | |
| Equi join |
Question 751 Explanation:
● A self join is a join in which a table is joined with itself (which is also called Unary relationships), especially when the table has a FOREIGN KEY which references its own PRIMARY KEY.
● To join a table itself means that each row of the table is combined with itself and with every other row of the table.
● To join a table itself means that each row of the table is combined with itself and with every other row of the table.
Correct Answer: B
Question 751 Explanation:
● A self join is a join in which a table is joined with itself (which is also called Unary relationships), especially when the table has a FOREIGN KEY which references its own PRIMARY KEY.
● To join a table itself means that each row of the table is combined with itself and with every other row of the table.
● To join a table itself means that each row of the table is combined with itself and with every other row of the table.