[솔루션]데이터베이스 시스템 5판 솔루션 Ramez Elmasri
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1.8 Give some informal queries and update operations that you would expect to apply to the
(c) Each PREREQUISITE record relates two COURSE records: one in the role of a course
(a) (Query) List the names of all students majoring in Computer Science.
CHAPTER 1: DATABASES AND DATABASE USERS
record with StudentNumber=8 is stored in the database of Figure 1.5(a), the DBMS will
(b) (Query) What are the prerequisites of the Database course?.
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title proper(제목) : 데이터베이스 시스템 5판
StudentNumber=8 is Brown is stored multiple times. Redundancy is controlled when the
completed.
database. For example, in Figure 1.5(a) the fact that the name of the student with
119 to B.
Answer:
DBMS ensures that multiple copies of the same data are consistent; for example, if a new
Answer:
1.9 What is the difference between controlled and uncontrolled redundancy?
[솔루션]데이터베이스 시스템 5판 솔루션 Ramez Elmasri
Redundancy is when the same fact is stored multiple times in several places in a
and the other in the role of a prerequisite to that course.
(e) (Update) Change the grade that Smith received in Intro to Computer Science section
(a) Each SECTION record is related to a COURSE record.
(c) (Query) Retrieve the transcript of Smith. This is a list of StudentNumber=23, Class=1 (freshman), and Major=MATH.
(a) A view that groups all the students who took each section and gives each students
have uncontrolled redundancy.
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1.11 Give some additional views that may be needed by other user groups for the
순서
ensure that StudentName=Smith in that record. If the DBMS has no control over this, we
database shown in Figure 1.2.
출판사 & 저자 : Ramez Elmasri
database shown in Figure 1.2.
(d) (Update) Insert a new student in the database whose Name=Jackson,
Answers to Selected Exercises
SectionIdentifier, Semester, Year, Grade> for each course section that Smith has
잘못된 reference(자료)가 있을시 환불요청 하시면 환불을 받으실수 있습니다.
데이터베이스,솔루션,시스템,5판
레포트 > 공학,기술계열
다. 내용을 잘 읽어보시고 확실한 자료라고 생각되시면 다운을 받아주시면 됩니다. 내용을 잘 읽어보시고 확실한 reference(자료)라고 생각되시면 다운을 받아주시면 됩니다. Answer:
1.10 Name all the relationships among the records of the database shown in Figure 1.2.
(b) Each GRADE_REPORT record is related to one STUDENT record and one SECTION
Answer:
record.
참고 :
제목 : 데이터베이스 시스템 5판 출판사 & 저자 : Ramez Elmasri 참고 : 잘못된 자료가 있을시 환불요청 하시면 환불을 받으실수 있습니다.
