Description
Hello Mr.Mike,
I have a qustions regarding the project. Please give me in general a brief description of our project and answer the following questions:
1- What method was used for rewriting the queries to remove the duplicate condition ?
2- What method was used for query optimization based on relation algebra?
Thank you .
Explanation & Answer
Hello ,This is the report of our XML assigment
XML PROJECT REPORT
In this project , it is provided a simulation of real life data exchange
application using XML. Specifically , sender has XML data stored inside XML table
. Our application converts the XML data into relational form and stores them inside
the relational tables of the receiver . All the requirements of this assignment are
followed . Specifically , sender and receiver database are simulated inside the same
database where first it gets created the XML table of the sender , then the relational
tables of the receiver get created and finally XML data of the sender gets converted
into relational form and get stored inside the previously created relational tables of the
receiver(structured form). It is tested that XML data are coded in well-format and
without errors . Receiver has two relational tables where the data retrieved from
sender get stored and each of the relational table has seven rows. Multiple insertion at
once technique is applied at sender table so the performance of the applications is
improved ( faster more efficient code).
For the purpose of this assignment it was decided to create XML and
relational tables relevant to an online emarket- bidding system (for example 'ebay') .
Due to the fact that...
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