Which of the following components of a database management system (dbms) is used to design elements of an application using a database, such as data entry screens, interactive menus, and interfaces with other programming languages?
a. the application manipulation component
b. the application administration component
c. the application definition component
d. the application generation component

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Well, this code would box the whole body of an html document. by using the relative value for position, you are telling it to position relative to its normal position, which the top left corner is at (0,0). by using left: 50px, you are telling the box to set the left margin  edge to 50px and by using top: 50px, you are telling it to set the top margin edge to 50px. by doing this shifting, the top left corner of the box, which is at (0,0) would be positioned at (50,50)