Explanation:None. 6. SQL view is said to be updatable (that is, inserts, updates or deletes can be applied on the view) if which of the following conditions are satisfied by the query defining the view?
A. The from clause has only one database relation.
B. The query does not have a group by or having clause.
C. The select clause contains only attribute names of the relation, and does not have any expressions, aggregates, or distinct specification.
D. All of the mentioned
Answer:A
Explanation:None. 6. SQL view is said to be updatable (that is, inserts, updates or deletes can be applied on the view) if which of the following conditions are satisfied by the query defining the view?
A. The from clause has only one database relation. B. The query does not have a group by or having clause. C. The select clause contains only attribute names of the relation, and does not have any expressions, aggregates, or distinct specification. D. All of the mentioned
Explanation:All of the conditions must be satisfied to update the view in sql. 7. Which of the following is used at the end of the view to reject the tuples which do not satisfy the condition in where clause ?