Ellen's Data Update Project: A Virtual Success!
How did Ellen access the data for her project?
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.
Final answer: Ellen is accessing the data using a virtual table.
Correct Answer:
The correct response is a. Ellen accesses the data through a virtual table.
Ellen, a temporary employee, was hired to update the telephone and fax numbers of several hundred clients in the company database. To facilitate this task, a data manipulation process created a view for her named Temp_Input. Ellen then made her data changes to the Temp_Input table.
Ellen's access to the data was through a virtual table, not directly manipulating the main database, accessing a physical copy of the database, or using a temporary file. A virtual table, in this case named 'Temp_Input', is a view that is used for specific data handling tasks and isn't physically stored in the database.
By using the virtual table, Ellen was able to effectively make her data updates without altering the main database directly. This method ensures data integrity and allows for a streamlined process of making necessary changes without affecting the original data.
It's important to understand the concept of virtual tables in database management systems, as they provide a valuable tool for data manipulation and access while maintaining the security and structure of the main database.