1z1-909 무료 덤프문제 온라인 액세스

Examine these commands and output:


Which is true about the execution of the insert statement?

• A.It inserts a row in the view and base table.
• B.It inserts a new row in the view only.
• C.It inserts a new row in the base table only.
• D.It returns an error.

Examine these commands which execute successfully:
mYsql> CREATE TABLE income (acct_num INT, amount DECIMAL(10,2));
mysql> CREATE TRIGGER subtotal BEFORE INSERT ON income
FOR EACH ROW SET @subtotal = subtotal + NEW.amount;
Which is true for the income table?

• A.Execution of an insert statement causes the trigger to activate.
• B.The trigger body set causes trigger activation.
• C.The trigger activates after any row in the table has been updated.
• D.The trigger activates after any row has been inserted into the table.

The continent column in the country table contains no null values.
Examine this output:

A)

B)

C)

D)

• A.Option D
• B.Option B
• C.Option C
• D.Option A

Examine these statements issued from Session 1 which execute successfully:

Now, examine this statement issued from Session 2:

What is the outcome of the update statement in Session 2?

• A.The row will be updated immediately.
• B.The transaction in Session 1 will be rolled back automatically.
• C.The statement will wait for the transaction in Session 1 to finish.
• D.A deadlock will occur.

Examine this table definition:

The table must always remain a valid document store collection. What restriction does this impose on any added column?

• A.The column must be a generated column referencing only an existing attribute of doc.
• B.The column must have a default value.
• C.The column must be indexed.
• D.The column must be used in a unique constraint.
• E.The column must be a generated column referencing any attribute of doc.