What are tuple variables in dbms?

Is the samsung s5560 an android? Why does your computer say it goes to sleep when the light is still on but the screen is black? What button in the Alignment group in the Home tab can be used to rotate text within cells? Would a direct TV receiver be connected to a computer or a conventional television set? What is the difference between Microsoft Windows and Office? What are the answers to 4.5 motion in one direction? Who invented the microscope excel? Where is the pound mark on keyboard? What is the best antivirus? Do you have to pay to use a open source software? What feature will permit you to set up active directory to allow each manager to manage his or her own container but not any other containers? How does convergence and divergence apply to the lenses? Do canary birds eat in groups? What color does blue and red make? Where can one find reviews for Mac mini computers? How do you edit a movie that is in mini DVD form Your Sony Handycam Records videos right to a mini disc but you arent sure how to edit these discs on your imovie or windows movie maker software? Can watch xfinity from PC to lg 32ld450 32 ld450 series 1080p lcd HDTV? What is the clock speed measurement of a million cycles per second? What is the appearance of text or objects on a slide? How many wheelbarrows make one cubic meter?