以下哪些数据是结构化数据？

以下哪些数据是非结构化数据？

目前数据库技术主要分为传统数据库技术、面向对象数据库技术、分布式数据库技术、（）、（）、半结构化数据库技术等。

安全认证技术是什么？当前主要的安全认证技术有哪些？

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

以下哪些情况会造成提示“Incorrect number or IP address”？（）

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。