Extracting Useful Data
In order to extract useful data from the database, you normally need to know
the names of the tables and columns containing the data you wish to access.
The main enterprise DBMS’s contain a rich amount of database metadata that
you can query to discover the names of every table and column within the
database. The methodology for extracting useful data is the same in each case;
however, the details differ on different database platforms. We will examine
examples of extracting useful data from Oracle and MS-SQL databases.
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