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Dad 220 4 2 Lab Cardinality And Targeted Data Exam Script Solved Questions And Correct Answers Graded A+

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DAD 220 4 2 LAB CARDINALITY AND TARGETED DATA EXAM SCRIPT SOLVED QUESTIONS AND CORRECT ANSWERS GRADED A+

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DAD 220 4 2 LAB CARDINALITY AND
TARGETED DATA EXAM SCRIPT SOLVED
QUESTIONS AND CORRECT ANSWERS
GRADED A+


◉ Relational Model. Answer: A model based on mathematical
principle.
1. A data structure that prescribes how data is organized
2. Operations that manipulate data structures
3. Rules that govern valid relational data


◉ Domain. Answer: A named set of possible database values, such as
integers, dictionary words, or logical values


◉ Tuple. Answer: A finite sequence of values, each drawn from a
fixed domain. Ex: (3, apple, True)


◉ Relation. Answer: A named set of tuples, all drawn from the same
sequence of domains


◉ Attribute. Answer: Each tuple position is called an attribute and
given a unique name

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