Which of the following is NOT a valid statement?
a. You can change the name of a table only if it does not contain any data.a. You can change the
name of a table only if it does not contain any data.
b. You can change the length of a column that does not contain any data.
c. You can delete a column that does not contain any data.
d. You can add a column to a table
Which of the following is true?
a. When you execute an ALTER TABLE command, other users cannot use the database.
b. You can add a column to a table as long as the table is not being queried byanother user.
c. All data contained in a table will be lost if the table is dropped.
d. All of the above statements are true.
Solution
question 1:
Answer is option A
Question 2:
Answer is option D