Database Access: Ellen's Role in Data Manipulation

What can be said about Ellen's access to the data?

Ellen is a temporary employee hired to update contact information in the company database. How does she access and manipulate the data?

a. Ellen accesses the data through a virtual table.

b. Ellen accesses the data through direct manipulation of the main database.

c. Ellen accesses the data through a physical copy of the main database.

d. Ellen accesses the data through a temporary file created for her.

Answer:

Ellen accesses the data through a virtual table known as a view, which does not store data physically, but rather displays the data from the main database as defined by an SQL statement.

Ellen's role as a temporary employee involves updating hundreds of client contact information in the company's database. In order to facilitate her data manipulation process, a view named Temp_Input is created for her.

This view acts as a virtual table, allowing Ellen to interact with the data without directly manipulating the main database. The Temp_Input view presents the data from the main database based on the SQL statement, enabling Ellen to make necessary changes.

Any modification made by Ellen via the Temp_Input view is immediately reflected in the main database, ensuring that the contact information is updated efficiently and accurately.