University of the People. CS2203 FINAL EXAM With All Correct Answers, Top Rated

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Which view of information deals with how the information is physically arranged, stored, and accessed? Select one: a. Physical View b. Logical View c. Information View d. None of the Above Ques tion 2 Answer saved Marked out of 1.00 Flag question Question text A lack of normalisation can lead to which one of the following problems Select one: a. Lost Updates b. Deletion of data c. Insertion problems d. Deadlock conditions Question 3 Answer saved Marked out of 1.00 Flag question Question text Foreign keys uniquely identify records. Select one: True False Question 4 Answer saved Marked out of 1.00 Flag question Question text In one-to-many relationship the table in ‘one’ side is called _______ and on ‘many’ side is called _______ Select one: a. Child , Parent b. Parent , Child c. Brother , Sister d. Father , Son Question 5 Answer saved Marked out of 1.00 Flag question Question text Select the BEST answer. In a real relational database system, if you try to join (natural join) tables R and S and R is empty (that is, it has no tuples), Select one: a. the system reports an error. b. the answer set is an empty table. c. the answer set is the same as table S. d. the answer set consists of just one row. e. an answer set is returned; however, the results are system dependent. Question 6 Answer saved Marked out of 1.00 Flag question Question text Foreign keys are not necessary in relational databases. Select one: True False Question 7 Answer saved Marked out of 1.00 Flag question Question text Consider the following relation: Repayment(borrower_id,name,address,loanamount,requestdate,repayment_ date,repayment_amount) Which of the following SQL statements will return all the tuples with information on repayments from borrower_id equal to 42, and where the lent amount exceeds 1000 USD. Choice 1: SELECT sum(repayment_amount) FROM Repayment WHERE borrower_id=42 AND loanamount>1000; Choice 2: SELECT * FROM Repayment WHERE borrower_id=42 AND loanamount>1000; Choice 3: SELECT sum(loanamount) FROM Repayment WHERE borrower_id==42 AND loanamount>1000; Choice 4: SELECT * FROM r.Repayments WHERE r.borrower_id=42 AND r.loanamount

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