简述齿轮泵的工作原理。
民事诉讼的状书程序包括哪几种法律文书？
In your multitenant container database (CDB) containing pluggable database (PDBs), you granted theCREATE TABLE privilege to the common user C # # A_ADMIN in root and all PDBs. You execute thefollowing command from the root container:SQL > REVOKE create table FROM C # # A_ADMIN;What is the result?（） It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root only.。 It fails and reports an error because the CONTAINER=ALL clause is not used.。 It excludes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in root and all PDBs.。 It fails and reports an error because the CONTAINER=CURRENT clause is not used.。 It executes successfully and the CREATE TABLE privilege is revoked from C # # A_ADMIN in all PDBs.。
ote the following structures in your database server： 1：Extents 2：OS Blocks 3：Tablespace 4：Segments 5：Oracle Data Block Which option has the correct arrangement of these structures from the smallest to the largest（） 2， 5， 1， 4， 3。 1， 2， 3， 4， 5。 5， 2， 1， 3， 4。 2， 1， 5， 4， 3。
根据年平均雷暴日的多少，雷电活动区分为（）、中雷区、多雷区和强雷区。 无雷区。 少雷区。 稀雷区。 弱雷区。
Where can you add your own PL/SQL code in relation-handling triggers?（）
