问题陈述：
您需要将本机XML数据存储到数据库中的关系表中。
解：
Oracle有几种存储XML文档的方法。在不需要更改XML或可以使用XSLT提取XML的一部分的情况下，一种存储数据的方法是使用XMLTYPE数据转换。
我们将使用XMLTYPE调用将提供的文本转换为XMLTYPE数据类型。在后台，Oracle XMLTYPE支持CLOB数据类型，因为XML在内部存储为CLOB。这意味着我们可以使用相同的方法进行转换，将调用传递给XMLTYPE一个最大4GB的字符串。
强制转换为XMLTYPE对我们的XML数据强制执行一些规则。如果使用XML架构定义了列或表，则该架构将用于验证数据，确保存在强制性元素，并且整个结构准确地映射到该架构。
我们将首先创建一个表来存储XML。
创建表tmp_store_xml（结果XMLTYPE）;
DECLARE result XMLTYPE; data VARCHAR2(10); BEGIN FOR CUR IN (SELECT department_id FROM departments) LOOP WITH tmp AS (SELECT XMLROOT(XMLFOREST( dept_t(department_id, department_name, CAST(MULTISET (SELECT student_id, first_name, last_name, phone_number FROM students e WHERE e.department_id = d.department_id ) AS stulist_t )) AS "Department"),version '1.0') AS dataxml FROM departments d WHERE d.department_id = '' || cur.department_id || '' ) SELECT XMLTYPE.CREATEXML(XMLSERIALIZE(CONTENT (dataxml) INDENT size=2)) INTO result FROM tmp; INSERT INTO tmp_store_xml VALUES(result); COMMIT; END LOOP; END;
<Department DEPTNO="60"> <DNAME>IT</DNAME> <STU_LIST> <STU_T STUNO="103"> <FNAME>BROWN</FNAME> <LNAME>MICHAEL</LNAME> <PHONE>111.111.1248</PHONE> </STU_T> <STU_T STUNO="104"> <FNAME>JONES</FNAME> <LNAME>WILLIAM</LNAME> <PHONE>111.111.1249</PHONE> </STU_T> <STU_T STUNO="105"> <FNAME>MILLER</FNAME> <LNAME>DAVID</LNAME> <PHONE>111.111.1250</PHONE> </STU_T> <STU_T STUNO="106"> <FNAME>DAVIS</FNAME> <LNAME>RICHARD</LNAME> <PHONE>111.111.1251</PHONE> </STU_T> <STU_T STUNO="107"> <FNAME>GARCIA</FNAME> <LNAME>CHARLES</LNAME> <PHONE>111.111.1252</PHONE> </STU_T> </STU_LIST> </Department>
DROP TABLE students; COMMIT; CREATE TABLE students ( student_id NUMBER(6) , first_name VARCHAR2(20) , last_name VARCHAR2(25) , email VARCHAR2(40) , phone_number VARCHAR2(20) , join_date DATE , class_id VARCHAR2(20) , fees NUMBER(8,2) , professor_id NUMBER(6) , department_id NUMBER(4) ) ;
CREATE UNIQUE INDEX stu_id_pk ON students (student_id) ;
INSERT INTO students VALUES (100,'SMITH','JAMES','SMITH.JAMES@notreal.com','111.111.1245',TO_DATE('17-06-2003','DD-MM-YYYY'),'INS_CHAIRMAN',24000,NULL,NULL);
INSERT INTO students VALUES (101,'JOHNSON','JOHN','JOHNSON.JOHN@notreal.com','111.111.1246',TO_DATE('21-09-2005','DD-MM-YYYY'),'INS_VP',17000,100,90);
INSERT INTO students VALUES (102,'WILLIAMS','ROBERT','WILLIAMS.ROBERT@notreal.com','111.111.1247',TO_DATE('13-01-2001','DD-MM-YYYY'),'INS_VP',17000,100,90);
INSERT INTO students VALUES (103,'BROWN','MICHAEL','BROWN.MICHAEL@notreal.com','111.111.1248',TO_DATE('03-01-2006','DD-MM-YYYY'),'INS_STAFF',9000,102,60);
INSERT INTO students VALUES (104,'JONES','WILLIAM','JONES.WILLIAM@notreal.com','111.111.1249',TO_DATE('21-05-2007','DD-MM-YYYY'),'INS_STAFF',6000,103,60);
INSERT INTO students VALUES (105,'MILLER','DAVID','MILLER.DAVID@notreal.com','111.111.1250',TO_DATE('25-06-2005','DD-MM-YYYY'),'INS_STAFF',4800,103,60);
INSERT INTO students VALUES (106,'DAVIS','RICHARD','DAVIS.RICHARD@notreal.com','111.111.1251',TO_DATE('05-02-2006','DD-MM-YYYY'),'INS_STAFF',4800,103,60);
INSERT INTO students VALUES (107,'GARCIA','CHARLES','GARCIA.CHARLES@notreal.com','111.111.1252',TO_DATE('07-02-2007','DD-MM-YYYY'),'INS_STAFF',4200,103,60);
INSERT INTO students VALUES (108,'RODRIGUEZ','JOSEPH','RODRIGUEZ.JOSEPH@notreal.com','111.111.1253',TO_DATE('17-08-2002','DD-MM-YYYY'),'CL_PHY',12008,101,100);
INSERT INTO students VALUES (109,'WILSON','THOMAS','WILSON.THOMAS@notreal.com','111.111.1254',TO_DATE('16-08-2002','DD-MM-YYYY'),'CL_MATH',9000,108,100);
INSERT INTO students VALUES (110,'MARTINEZ','CHRISTOPHER','MARTINEZ.CHRISTOPHER@notreal.com','111.111.1255',TO_DATE('28-09-2005','DD-MM-YYYY'),'CL_MATH',8200,108,100);
INSERT INTO students VALUES (111,'ANDERSON','DANIEL','ANDERSON.DANIEL@notreal.com','111.111.1256',TO_DATE('30-09-2005','DD-MM-YYYY'),'CL_MATH',7700,108,100);
INSERT INTO students VALUES (112,'TAYLOR','PAUL','TAYLOR.PAUL@notreal.com','111.111.1257',TO_DATE('07-03-2006','DD-MM-YYYY'),'CL_MATH',7800,108,100);
INSERT INTO students VALUES (113,'THOMAS','MARK','THOMAS.MARK@notreal.com','111.111.1258',TO_DATE('07-12-2007','DD-MM-YYYY'),'CL_MATH',6900,108,100);
COMMIT;CREATE TABLE departments ( department_id NUMBER(4) , department_name VARCHAR2(30) CONSTRAINT dept_name_nn NOT NULL , professor_id NUMBER(6) , location_id NUMBER(4) ) ;
INSERT INTO departments VALUES ( 10, 'Administration', 200, 1700); INSERT INTO departments VALUES ( 20, 'Teaching', 201, 1800); INSERT INTO departments VALUES ( 30 , 'Purchasing' , 114 , 1700 ); INSERT INTO departments VALUES ( 40 , 'Human Resources' , 203 , 2400 ); INSERT INTO departments VALUES ( 50 , 'Students' , 121 , 1500 ); INSERT INTO departments VALUES ( 60 , 'IT' , 103 , 1400 ); INSERT INTO departments VALUES ( 70 , 'Public Relations' , 204 , 2700 ); INSERT INTO departments VALUES ( 80 , 'Fee collectors' , 145 , 2500 ); INSERT INTO departments VALUES ( 90 , 'Executive' , 100 , 1700 ); INSERT INTO departments VALUES ( 100 , 'Finance' , 108 , 1700 ); INSERT INTO departments VALUES ( 110 , 'Accounting' , 205 , 1700 ); INSERT INTO departments VALUES ( 120 , 'Treasury' , NULL , 1700 ); INSERT INTO departments VALUES ( 130 , 'Corporate Tax' , NULL , 1700 ); INSERT INTO departments VALUES ( 140 , 'Control And Credit' , NULL , 1700 ); INSERT INTO departments VALUES ( 160 , 'Benefits' , NULL , 1700 ); INSERT INTO departments VALUES ( 230 , 'Helpdesk' , NULL , 1700 ); COMMIT;