Oracle XML DB Training in Chennai


This Oracle database 11g use xml db training in chennai allows you to deep dive into the key features of Oracle XML DB. Through interactive instructions and hands-on exercises, expert Oracle instructors will teach you how to use Oracle XML DB to store, access, manipulate, validate, search, update, annotate, transform, generate, import and export XML data.


About Oracle Instructor

- Dinesh work as an Oracle Consultant & Instructor, He has over 11 years of Oracle Implementation experience and recognized expert in Oracle data warehouse technologies, advanced analytics and Oracle data mining.  Mr. Dinesh specializes in Oracle Discoverer, Oracle OLAP and Oracle Data Warehouse Builder.

- He is also been as Senior Instructor of Oracle University and provided 120 Corporate trainings, trained 2500 corporate & fresher employees.

Talk to the Trainer @ +91-89399 15577



He is an Oracle Certified Master (OCM). Expertised with RAC, Data Guard, ASM, Oracle Exadata, RMAN, Oracle Performance Tuning, Streams, Security & more.

He is among few of the Oracle Certified Master (OCM's) in the World to achieve below certifications in his area of research.
- Oracle Certified Professional (OCP) 9i
- Oracle Certified Professional (OCP) 10g
- Oracle Certified Professional (OCP) 11g
- Oracle 10g Certified RAC Expert
- Oracle 10g Certified Master (OCM)
- Oracle 11g Exadata Certified Implementation Specialist


Oracle XML DB Training Course Syllabus in Chennai


Oracle XML DB Training in Chennai provides developers and other users with XML tools, which work inside the Oracle Database. By enrolling in this course, you'll develop the skills to use XML DB technology with SQL and PL/SQL for application development. This course covers the XML DB features and utilities available for the Oracle Database that can be used to develop SQL and PL/SQL applications.



Oracle XML DB Training Course Contents :

The focus of this hands-on training is Oracle XML DB, which includes packages supporting Oracle XML DB. You'll learn to store, retrieve, search, generate and manipulate XML data in the Oracle Database. Expert instructors will also focus on the XQuery language, which is designed to query XML data from both XML files stored in the database and from relational databases.


  • Manage XML storage in Oracle XML DB.
  • Retrieve XML data in Oracle XML DB.
  • Create and use indexes on XML data.
  • Generate and manipulate XML in Oracle XML DB.
  • Use the Oracle XML DB Repository.
  • Manage changes in an XML schema.
  • Import and export XML data.
  • Update XML content using XQuery update.
  • Search XML content using XQuery Full-Text search.

Create XML file using PL/SQL


To create a xml file, we need to create a directory and grant the read write permission to the specified USER as

C:\>sqlplus sys/sys as sysdba
SQL*Plus: Release 11.2.0.3.0 Production on Fri Mar 29 15:29:12 2013
Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Release 11.2.0.3.0 - Production

SQL> create or replace directory myxml as 'E:\myxml\';
Directory created.

SQL> grant read, write on directory myxml to hr;
Grant succeeded.

SQL> grant execute on utl_file to hr;
Grant succeeded.

NOTE: "E:\myxml\" has to be physical location on disk.

After creating the directory and granting the permissions to the HR user, following PL/SQL code needs to be executed by the HR user to create XML file.

C:\>sqlplus hr/admin
SQL*Plus: Release 11.2.0.3.0 Production on Tue Dec 29 15:32:06 2015
Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Release 11.2.0.3.0 - Production

SQL> DECLARE
 2      F UTL_FILE.FILE_TYPE;
 3      MYCLOB CLOB;
 4  BEGIN
 5      SELECT
 6        DBMS_XMLGEN.GETXML('
 7          SELECT
 8            E.EMPLOYEE_ID, E.FIRST_NAME, E.SALARY, D.DEPARTMENT_NAME
 9          FROM
10            EMPLOYEES E,
11            DEPARTMENTS D
12          WHERE
13            D.DEPARTMENT_ID=E.DEPARTMENT_ID
14        ')
15      INTO MYCLOB
16      FROM DUAL;
17
18      F := UTL_FILE.FOPEN('MYXML','EMP_DEPT.XML','w',32767);
19      UTL_FILE.PUT(F,MYCLOB);
20      UTL_FILE.FCLOSE(F);
21  END;
22  /

PL/SQL procedure successfully completed.

After the execution of above procedure, a file (EMP_DEPT.XML) would have been created at "E:\myxml\" location.


Load XML File in Oracle Table

In my last post, I have created a XML file using PL/SQL. Here we are trying to load that XML data back in a normal table of Oracle Database. We assume that the directory is created and the permissions are already granted also the XML file has been exported. To read my last post on Exporting XML file using PL/SQL, creating directory and granting permission, please click Create XML file using PL/SQL
To Load "EMP_DEPT.XML" file in to Oracle Table we have created a table with same structure of XML file EMP_DEPT as

C:\>sqlplus hr/admin
SQL*Plus: Release 11.2.0.3.0 Production on Dec 29 15:52:06 2015
Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected to:
Oracle Database 11g Release 11.2.0.3.0 - Production

SQL> CREATE TABLE EMP_DEPT
  2  (
  3  EMPNO NUMBER(4),
  4  ENAME VARCHAR2(10),
  5  SAL NUMBER(7,2),
  6  DNAME VARCHAR2(14)
  7  );

Table created.

Once the table is created, we just need to execute following query to load the XML file into the Oracle table.


SQL> INSERT INTO EMP_DEPT (EMPNO, ENAME, SAL, DNAME)
  2  SELECT *
  3  FROM XMLTABLE('/ROWSET/ROW'
  4         PASSING XMLTYPE(BFILENAME('MYXML', 'EMP_DEPT.XML'),
  5         NLS_CHARSET_ID('CHAR_CS'))
  6         COLUMNS EMPNO  NUMBER(4)    PATH 'EMPLOYEE_ID',
  7                 ENAME  VARCHAR2(10) PATH 'FIRST_NAME',
  8                 SAL    NUMBER(7,2)  PATH 'SALARY',
  9                 DNAME  VARCHAR2(14) PATH 'DEPARTMENT_NAME'
10       )
11  ;
14 rows created.

Data of "EMP_DEPT" can be determind as following


SQL> SELECT * FROM EMP_DEPT;
     EMPNO ENAME             SAL DNAME
---------- ---------- ---------- --------------
      7782 CLARK            2450 ACCOUNTING
      7839 KING             5000 ACCOUNTING
      7934 MILLER           1300 ACCOUNTING
      7566 JONES            2975 RESEARCH
      7902 FORD             3000 RESEARCH
      7876 ADAMS            1100 RESEARCH
      7369 SMITH            1000 RESEARCH
      7788 SCOTT            3000 RESEARCH
      7521 WARD             4000 SALES
      7844 TURNER           1500 SALES
      7499 ALLEN            2000 SALES
      7900 JAMES             950 SALES
      7698 BLAKE            2850 SALES
      7654 MARTIN           1250 SALES

14 rows selected.

Extract XML from CLOB tips


Question:  I have a CLOB that is storing XML, and I need to know the procedure for extracting the XML from the CLOB data type.  What is the way to get the XML from a CLOB in Oracle?


Answer:  You use the extractvalue procedure for extracting XML from a CLOB in Oracle SQL select statements. 

Direct CLOB projection is supported starting with 11.2.0.2, using XMLTable or XMLCast/XQuery functions (extractvalue, extract, xmlsequence are deprecated now) :

SELECT
   x.*
FROM
   test_xml t
   , XMLTable(
   '/*/record'
   passing t.xml_data
   columns
   description clob path 'description'
   ) x
;

Here is a simple example of extracting XML data from a CLOB:

1. Create an XML table.

create table
   xml_key
(  
   mycol number,
   xml   clob
);

 

2. Insert some xml data into the xml data column:

insert into
   xml_test
values
(
   1,
   '<?xml version="1.0" encoding="iso-8859-1"?>
<mydata> <key>100</id>
<name>Don Burleson</name>
<address>
   <line1>2837 Ford Road</line1>
   <line2>Raleigh</line2>
</address>
<phone>(919)-123-4567</phone>
</mydata>');


3. Query the XML with SQL

SELECT
   XMLTYPE(t.xml).EXTRACT('//name/text()').getStringVal(),
XMLTYPE(t.xml).EXTRACT('//address/line1/text()').getStringVal()
FROM
   xml_demo t;
Another way to extract XML from a CLOB is to use subquery factoring (the WITH clause):

with
   xmlData
as
( select
      XMLTYPE(t.xml) xml
  from
      xml_demo t
  where t.id = 1 )
      select
          x.xml.EXTRACT('//name/text()').getStringVal(),
          x.xml.EXTRACT('//address/line1/text()').getStringVal()
      from
          xmlData x ;

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Greens Technologys Overall Reviews


Greens Technologys Overall Reviews 5 out of 5 based on 17981 ratings. 17981 user reviews.
Oracle XML DB Training chennai """I think this is the best Oracle XML DB Training course in chennai I have taken so far..Well I am still in the process of learning new things but for me this learning process has become so easy only after I joined this course in greens technologies..as Dinesh is very organized and up to the point.. he knows what he is teaching and makes his point very clear by explaining numerous times. I would definitely recommend anyone who has any passion for Oracle.." ""



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