Database System Concepts 7th Edition Abraham Silberschatz, Henry F. Korth, S. Sudarshan - Solutions

Explain the concept of physical data independence and its importance in database systems.
Keyword queries used in web search are quite different from database queries. List key differences between the two, in terms of the way the queries are specified and in terms of what is the result of a query.
List five ways in which the type declaration system of a language such as Java or C++ differs from the data definition language used in a database.

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