Please provide full answer to the following questions withexampls
1What are the differences between bucket and chain?
2.explain in details the extendible hashing index operation,including insertion, deletion, and search.
3.explain the information integration, and two main integrationtechniques.
4.What is XML? What is DTD?
4.What is Well-formed XML? What is Valid XML?
5.what is the basic XML and DTD syntax.
6.what is the basic syntax of XPATH and XQuery.
7.write XQuery to search for specific items from a XML file
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