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The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but that's not an unique situation because it does not create the database structure very flexible for controlling access to storage for different accounts, putting the database on different storage disk drives, or backing up and restoring just phase of the database. You must have at least one database file but generally, more than one file are needed. In terms of accepting and using the data in the other objects and tables, the number of the folders is immaterial. The database files are not variable in size and never goes bigger than the size at which they were prepared
What are the advantages of using a DBMS? The benefits of using a DBMS are a) Controlling redundancy b) Restricting unauthorized access c) Giving multiple user interfac
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What is NULL? Give an example to described testing for NULL in SQL? The NULL SQL keyword is used to represent either a missing value or a value which is not applicable in a re
explain participation constraints with examples
What is the use of sub queries? A sub query is a select-from-where expression that is nested with in another query. A common use of sub queries is to do tests for set membershi
What are the several forms of identity? a) Value b) Name c) Built-in
(a) What is a Sub-Query? (b) What is the difference between a scalar sub-query and a tabular sub-query? (c) Write an equivalent SQL statement to get the Name of Product wh
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what is file organization? what are file organization techniques.explain in detail? explain random file organization technique, multikey file organization technique?what is indexin
What are views? Explain how views are different from tables? A view in SQL terminology is a one table in which is derived from other tables. These other tables could be base t
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