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Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer?.

Solutions for Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Computer Science Engineering (CSE). Download more important topics, notes, lectures and mock test series for Computer Science Engineering (CSE) Exam by signing up for free.

Here you can find the meaning of Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Consider the relation "enrolled(student, course)" in which (student, course) is the primary key, and the relation "paid(student, amount)" where student is the primary key. Assume no null values and no foreign keys or integrity constraints. Given the following four queries:Q. Which one of the following statements is correct?a)All queries return identical row sets for any databaseb)Query2 and Query4 return identical row sets for all databases but there exist databases for which Query1 and Query2 return different row sets.c)There exist databases for which Query3 returns strictly fewer rows than Query2d)There exist databases for which Query4 will encounter an integrity violation at runtime.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Computer Science Engineering (CSE) tests.