题目内容

闪点越低的液体,火灾危险性就越大。

查看答案
更多问题

氮氧化合物和碳氢化合物在太阳光照射下,会产生二次污染—光化学烟雾。

TheHRusercreatesastand-aloneprocedureasfollowsandgrantstheEXECUTEprivilegeontheproceduretomanydatabaseusers:
CREATEORREPLACEPROCEDUREcreate_dept(v_deptnoNUMBER,v_dnameVARCHAR2,v_mgrNUMBER,v_locNUMBER)BEGIN
INSERTINTOhr.departmentsVALUES(v_deptno,v_dname,v_mgr,v_loc);END;
Theusershavingpermissiontoexecutetheprocedureareabletoinsertrecordsintothe
DEPARTMENTStableeventhoughtheydonothavetheINSERTprivilegeonthetable.YouwantonlythoseuserswhohaveprivilegesontheDEPARTMENTStabletobeabletoexecutetheproceduresuccessfully.
WhatwouldyousuggesttothePL/SQLdeveloperstoachievethis()

复杂性来自科学理论的复杂结构

生态文明包含的内容生态文明包含着下述三个相互区别、相互联系的层面:

答案查题题库