Using relational algebra, create a view of all rooms in the Grosvenor Hotel, excluding price details. What would be the advantages of this view?
What will be an ideal response?
? roomNo, hotelNo, type (Room hotelNo (? hotelName=‘Grosvenor Hotel’ (Hotel)))
Security - hides the price details from people who should not see it.
Reduced complexity - a query against this view is simpler than a query against the two underlying
base relations.
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Answer the following statements true (T) or false (F)
1) PictureBoxes typically display images. 2) Visual C# files use the file extension .csharp. 3) A Form’s background color is set using the BackColor property. 4) You can add a control to a Form by double clicking its control icon in the Toolbox. 5) The Form, Label and PictureBox have identical properties.
Case EX 8-1Candace wants to create a chart sheet similar to the one shown above.Candace wants to move an embedded chart into a chart sheet. To do this, she would click the Chart Tools Design tab on the Ribbon. Then, in the ____ group, click the Move Chart button.
A. Location B. Move C. Chart Sheet D. Chart
Choose the correct number expression in the following sentence.? Few predators will attack a full-grown giraffe; however, _____ of calves do not survive their first year.
A. ?75 percent B. ?75%
Each assembly language statement corresponds to, at most, one ____________________ language statement.
Fill in the blank(s) with the appropriate word(s).