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Q:

How do you load data from XML file to a ORACLE table?

Answer

You need to first create a table in oracle that matches with the fields of the XML data.


So to get the XMl into the table, you can create a generic procedure that moves an XML document into a table by converting the elements to Oracle Canonical format.


Oracle Canonical format is as follows:


<ROWSET>


   <ROW>  


     <column_name_1 />


     .


     .


     </ROW>


     <ROW>


         <column_name_1 />


         .


         .


      </ROW> 


        .


        .


</ROWSET>        


ROW is used for the table names


ROWSET is used for the XML document


You can get the XML into the canonical form using XSL:


<?xml version="1.0"?>


<xsl:stylesheet 


             xmlns:xsl="https://www.w3.org/1999/XSL/Transform"                   


             version="1.0">


     <xsl:template match="/">


          <ROWSET>


               <ROW>


                         <Attribute_name>                      


                             <xsl:value-of select="Table_name/Attribute_name" />


                         </Attribute_name>


                < /ROW>


          </ROWSET>


     </xsl:template>


</xsl:stylesheet>


To transform the XML document into the canonical form, you can write a procedure. Make sure you include the line below in your procedure code:


v_rows := DBMS_XMLStore.insertXML(


                v_context,    


                XMLType.transform(p_xml_in, p_xsl_in));


The only remaining step is calling your procedure: 


DECLARE


   v_xml XMLType := XMLType( YOUR XML Document );


   v_xsl XMLType := XMLType( YOUR XSL Document );


BEGIN 


   procedure_name(v_xml, v_xsl, 'table_name');


END;

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Subject: Web Technology

Q:

What are string functions in VBScript?

Answer

Asc() - Returns ANSI Character Code 


Chr() - Returns Character from ANSI Code 


InStr() - Find a string within another 


InStrRev() - Find a string within another (Reverse) 


LCase() - Convert a string to lowercase 


Left() - Crops a string from left 


Len() - Determine the length of a string 


LTrim() - Remove leading spaces from a string 


Mid() - Crops a string 


Replace() - Replace a substring within a string 


Right() - Crops a string from right 


RTrim() - Remove trailing spaces from a string 


Space() - Creates a string with the specified number of spaces 


StrComp() - Compare two strings 


String() - Creates a repeated character string 


StrReverse() - Reverse the characters of a string 


Trim() - Remove both leading and trailing spaces from a string 


UCase() - Convert a string to uppercase 

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Subject: Web Technology

Q:

What are Math Constants and Functions using JavaScript?

Answer

Math object has two constant : Math.PI and Math.E


 


Math object has following functions:


- Math.abs(val1);


It will give absolute value of val1.


- Math.max(val1,val2);


This fuction will return maximum value from val1 and val2.


- Math.random();


This function will return a random number between 0 and 1.


- Math.floor(val1)


This function will returns decimal value of val1

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Subject: Web Technology

Q:

How to read and write a file using javascript?

Answer

Files can be read and written by using java script functions – fopen(),fread() and fwrite().


The function fopen() takes two parameters – 1. Path and 2. Mode (0 for reading and 3 for writing). The fopen() function returns -1, if the file is successfully opened.


Ex: file=fopen(getScriptPath(),0);


 


The function fread() is used for reading the file content.


Ex: str = fread(file,flength(file));


 


The function fwrite() is used to write the contents to the file.


Ex(): file = fopen("c:\MyFile.txt", 3);// opens the file for writing


fwrite(file, str);// str is the content that is to be written into the file.

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Subject: Web Technology

Q:

What does isNaN function do?

Answer

NaN stands for ‘not-a-number’. The function isNaN determines the argument or the value is a NaN. The function returns true if the argument is not a number, otherwise returns false.

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Subject: Web Technology

Q:

What is decodeURI(), encodeURI() in JavaScript?

Answer

To send the characters that can not be specified in a URL should be converted into their equivalent hex encoding. To perform this task the methods encodeURI() and decodeURI() are used.


For example, the following code snippet performs the encoding of URL:


<script type="text/javascript">


          var uri = https://www.mysite.com/city?=Banglore; // original URI


          var ncodeuri=encodeURI(uri);


          document.write("<br />ncodeuri”);


          var dcodeuri = decodeURI(ncodeuri); 


          document.write(“<br>/>dcodeuri”);


</script>

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Subject: Web Technology

Q:

How to set the cursor to wait in JavaScript?

Answer

The cursor can set to wait in JavaScript by using the property ‘cursor’ property. The following example illustrates the usage.


window.document.body.style.cursor = "wait"; 

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Subject: Web Technology

Q:

How to Accessing Elements using javascript?

Answer

The elements of JavaScript are accessed by their names. By default the browser is accessed by the element ‘windows’ and the page by ‘document’. The corresponding element has user defined names for forms and its elements. For example


var pwd = windows.document.frmLogin.password.value;


assigns the value of the password field of the form fromLogin in the current document, where password is the name of the element and frmLogin is the name of the form. Like wise any form element is accessed.

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Subject: Web Technology