WebSQL is a SQL-like （1） language for extracting information from the web. Its capabilities for performing navigation of web （2） make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a （3）, all the pages that can be reached from a given URL through （4） that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common （5） Interface.

[单选题]WebSQL is a SQL-like(36)language for extracting information from the web. Its capabilities for performing navigation of web(37)make it a useful tool for automating several web-related tasks that require the systematic processing of either all the lin

[单选题]WebSQL is a SQL-like （71） language for extracting information from the web. Itscapabilities for performing navigation of web （72） make it a useful tool for automatingseveral web-related tasks that require the systematic processing of either all the l

[单选题]WebSQL is a SQL-like ___(71)___ language for extracting information from the web. Its capabilities for performing navigation of web ___(72)___ make it a useful tool for automating several web-related tasks that require the systematic processing of ei

[单选题]SQL语句中的LIKE子句，可以实现（）。A . 索引查询B . 模糊查询C . 汇总数据D . 分组功能

[问答题]Never has there been a language quite like English.A bold statement, yet ne

[单选题]SQL语句中的LIKE子句后的参数下划----代表（）。A . 一个字符B . 多个字符C . 任意D . 一串字符

[多选题]SQL中的LIKE子句中可使用的通配符有()。A.*(星号)B.%(百分号)C._(下划线)D.？(问号)

[多选题]SQL中的LIKE子句中可使用的通配符有()。A.*(星号)B.%(百分号)C._(下划线)D.？(问号)

[多选题]SQL中的LIKE子句中可使用的通配符有()。A.*(星号)B.%(百分号)C._(下划线)D.？(问号)

[单选题]三元条件运算符ex1?ex2：ex3，相当于下面______语句。 ( )A．if(ex1)ex2；else ex3；B．if(ex2)ex1；else ex3；C．if(ex1)ex3；else ex2；D．if(ex3)ex2；else ex1；