A subquery that defines a view cannot include the GROUP BY clause
A view that is created with the subquery having the DISTINCT keyword can be updated
A view that is created with the subquery having the pseudo column ROWNUM keyword cannot be updated
A data manipulation language (DML) operation can be performed on a view that is created with the subquery having all the NOT NULL columns of a table
第1题:
A. The same key is used for encryption and decryption.
B. It is commonly used to create digital certificate signatures.
C. It uses two keys: one for encryption and a different key for decryption.
D. An attacker can decrypt data if the attacker captures the key used for encryption.
第2题:
Which two statements regarding firewall user authentication client groups are true?() (Choose two.)
第3题:
A. All the related indexes and views are automatically dropped
B. The flashback drop feature can recover only the table structure
C. Only the related indexes are dropped whereas views are invalidated
D. The flashback drop feature can recover both the table structure and its data
第4题:
Which two statements regarding asymmetric key encryption are true?()
第5题:
Which two statements are true regarding high-availability chassis clustering?()
第6题:
A. Tunnels are initiated by the LAC
B. Tunnels are initiated by the LNS
C. By default, subscriber authentication occurs on the LNS
D. By default, subscriber authentication occurs on the LAC
第7题:
Which two statements are true regarding the role of the Routing Engine (RE)?()
第8题:
A. All the related indexes and views are automatically dropped
B. The flashback drop feature can recover only the table structure
C. Only the related indexes are dropped whereas views are invalidated
D. The flashback drop feature can recover both the table structure and its data
第9题:
Which two statements are true regarding L2TP? ()(Choose two.)
第10题:
Which two statements are true regarding views?()