名词解释题微量元素 microelement, trace element
名词解释题
微量元素 microelement, trace element
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分析以下DTD文档： ＜!--ELEMENT doc(title?，chap*)--＞ ＜!-- ELEMENT title(#PCDATA)--＞ ＜!-- ELEMENT chap(sect+)--＞ ＜!-- ELEMENT sect(para+)--＞ ＜!-- ELEMENT para(#PCDATA)--＞ 下面的XML实例能够通过DTD的校验。（） A、＜doc＞＜chap＞＜para＞Text＜/para＞＜/chap＞＜/doc＞B、＜doc＞＜chap＞＜sect＞＜para＞Text＜/para＞＜/chap＞＜/doc＞C、＜doc＞＜title＞Text＜/title＞＜/doc＞（*红色）D、＜doc＞＜title＞Text＜/title＞＜sect＞＜para＞Text＜/para＞＜/sect＞＜/doc＞
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下面的文件正确吗？为什么？用IE和本章中的解析器验证你的结论。 mes.dtd ＜!ELEMENT message ANY＞ ＜!ELEMENT persion (name,age?,lxfs)＞ ＜!ELEMENT lxfs (#PCDATA,tel|email)*＞ ＜!ELEMENT name (first,last)＞ ＜!ATTLIST name sex (male|female) "male"＞ ＜!ELEMENT first %pc; ＞ ＜!ELEMENT last %pc;＞ ＜!ELEMENT age %pc;＞ ＜!ELEMENT tel %pc;＞ ＜!ELEMENT email %pc;＞ ＜!ENTITY % pc “(#PCDATA)”＞ ＜!ELEMENT emergency EMPTY＞ ＜!ATTLIST emergency fire CDATA #FIXED "119" police CDATA #FIXED "110" hospital CDATA #FIXED "120" ＞ mes.xml ＜?xml version="1.0" encoding="gb2312"?＞ ＜!DOCTYPE SYSTEM "mes.dtd"＞ ＜message＞ ＜persion＞ ＜name sex="男"＞ ＜first＞li＜/first＞ ＜last＞xiao＜/last＞ ＜/name＞ ＜age＞25＜/age＞ ＜lxfs＞ ＜tel＞123456＜/tel＞ ＜/lxfs＞ ＜/persion＞ ＜persion＞ ＜name＞ ＜first＞wang＜/first＞ ＜last＞xiao＜/last＞ ＜/name＞ ＜lxfs＞＜/lxfs＞ ＜/persion＞ ＜emergency fire="120" police="110" /＞ ＜/message＞
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单选题In your test database， you find that a user’s session is executing a lot of SQL statements， resulting in the generation of a large number of trace files. While investigating the reason， you find that SQL trace has been enabled at the instance level. You want to disable SQL trace， remotely， only for that user session to reduce the volume of trace data being generated. How do you achieve this objective？（）Aby setting the SQL_TRACE parameter to FALSE in the parameter fileBby using DBMS_MONITOR.SESSION_TRACE_DISABLE to disable the tracing for the user sessionCby setting the SQL_TRACE parameter to FALSE by using the ALTER SYSTEM command in the user sessionDby setting the SQL_TRACE parameter to FALSE by using the ALTER SESSION command in the user session
多选题Which two are valid values for the element inside a element ofa web application deployment descriptor？（）ANULLBSECURECINTEGRALDENCRYPTEDECONFIDENTIAL
多选题You create a Web application. You need to turn on Tracing for a page that is not performing well. You must store the trace information in a database for reporting and trending. Which two actions should you perform? （）AAdd a TraceContextEventHandler to the Trace.TraceFinished event to add the trace records into the database.BAdd a system.diagnostics section to the Web.config file. Then add a listener to the new section.CUse the System.Diagnostics.Trace object to connect to a database. Then insert the trace records.DIn the Page_Load for the page, place the Trace.Write call into a SQL INSERT statement.
单选题在jQuery的层次选择器中，要选取紧接在element1元素后的一个element2元素，正确的是（）。A$（element1空格element2）B$（element1element2）C$（element1+element2）D$（element1~element2）
多选题Which two are valid values for the element inside a element of a web application deployment descriptor？（）ANULLBSECURECINTEGRALDENCRYPTEDECONFIDENTIAL