Consider the relations Courses1, Courses2,_Enrollmentand Students.Coursescid cnameAl CalculusA2 AlgebraA5 EnglishLocationLIL2L3Student(sid, sname, age, level)Courses2cidA5BlB2nameEnglishHistoryb) Courses 1-Courses2L3L4Computing L5(1) Give the results of the following relationalalgebra expressions:a) Teid ( name="History' OR 'Computing (Courses2))c) Courses Courses2Classroomd) Courses1 Enrollmente) Enrollment / Teid (Courses1)Enrollmentsid cid101Al102A5103 B1102102AlA2(2) Write the following query in Relational Algebra.a) Find the sids of students who have enrolled incourse Calculus.b) Find the names of students who have enrolled incourse Calculus.c) Find the names of students who have enrolled atleast one course._d) Find the names of students who have enrolled in_Calculus or Algebra.e) Find the sids of students who have enrolled in allcourses (both Courses1 and Courses2).

As per the answering guidelines solving the first 3 sub question completely. 1) Here selection…

Consider the relations Courses1, Courses2, Enrollment and Students. Courses cid ename Al Calculus A2 Algebra Location LI L2 A5 English L3 Student(sid, sname, age, level) Courses2 cid Classroom A5 L3 Bl L4 B2 Computing LS name English History b) Courses 1-Courses2 (1) Give the results of the following relational algebra expressions: a) Teid ( name="History' OR 'Computing (Courses2)) c) Courses Courses2 d) Courses1 Enrollment Enrollment sid cid 101 Al 102 A5 103 BI 102 A1 102 A2 e) Enrollment / Teid (Courses1) (2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in _course Calculus. b) Find the names of students who have enrolled in course Calculus. c) Find the names of students who have enrolled at least one course. d) Find the names of students who have enrolled in Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).

Consider the relations Courses1, Courses2, Enrollment and Students. Courses cid ename Al Calculus A2 Algebra Location LI L2 A5 English L3 Student(sid, sname, age, level) Courses2 cid Classroom A5 L3 Bl L4 B2 Computing LS name English History b) Courses 1-Courses2 (1) Give the results of the following relational algebra expressions: a) Teid ( name="History' OR 'Computing (Courses2)) c) Courses Courses2 d) Courses1 Enrollment Enrollment sid cid 101 Al 102 A5 103 BI 102 A1 102 A2 e) Enrollment / Teid (Courses1) (2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in _course Calculus. b) Find the names of students who have enrolled in course Calculus. c) Find the names of students who have enrolled at least one course. d) Find the names of students who have enrolled in Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).

Principles of Information Systems (MindTap Course List)

12th Edition

ISBN:9781285867168

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter5: Database Systems And Applications

Section: Chapter Questions

Problem 4PSE: Using a graphics program, develop an entity-relationship diagram for a database application for an...

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Consider the relations Courses1, Courses2, _Enrollment and Students. Coursesl cid ename Al Calculus Location L1 A2 Algebra L2 A5 English L3 Student(sid, sname, age, level) Courses2 cid A5 B1 B2 b) Courses 1-Courses2 name English L3 History L4 Computing L5 (1) Give the results of the following relational algebra expressions: a) Teid ( name="History' OR 'Computing (Courses2)) c) Courses Courses2 Classroom d) Courses1 Enrollment e) Enrollment / Teid (Courses1) Enrollment sid cid 101 Al 102 A5 103 Bl 102 Al 102 A2 (2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in course Calculus. b) Find the names of students who have enrolled in course Calculus. _c) Find the names of students who have enrolled at least one course. d) Find the names of students who have enrolled in _Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).
Let R₁ and R₂ be the relations on X={a,b,c}, R₁={ (b,a), (c,b), (a,c) } R₂={ (a,c), (b,c)} R₁-¹= R₂ ° R₁=
Consider the relations Courses1, Courses2, _Enrollment and Students. Courses cid ename Al Calculus A2 Algebra A5 English Location LI L2 L3 Student(sid, sname, age, level) Courses2 cid AS B1 B2 name English History b) Courses 1-Courses2 L3 L4 Computing L5 c) Courses Courses2 Classroom (1) Give the results of the following relational _algebra expressions: a) Teid ( name='History' OR 'Computing (Courses2)) d) Courses1 Enrollment e) Enrollment / Teid (Courses1) Enrollment sid cid 101 Al 102 A5 103 Bl 102 Al 102 A2 CARENA (2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in course Calculus. b) Find the names of students who have enrolled in course Calculus. _c) Find the names of students who have enrolled at least one course. _d) Find the names of students who have enrolled in _Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).
Question 2: The UML display the mediator pattern, describe uml and the relations, build the code in java Mediator Colleague Extends Concrete Colleague Extends Concrete Mediator Extends Concrete Colleague A
Consider the relations Courses1, Courses2, Enrollment and Students. Courses1 Courses2 Enrollment cid cname Location cid name Classroom sid cid Al Calculus A2 Algebra A5 English English History Computing LI A5 L3 101 Al L2 B1 L4 102 |A5 L3 B2 L5 103 B1 102 A1 102 A2 Student(sid, _sname, age, level) (1) Give the results of the following relational _algebra expressions: a) Tcid (o name ="History' OR 'Computing"(Courses2)) b) Courses1-Courses2 c) Courses1Courses2 d) Courses1 Enrollment e) Enrollment / Tcid (Courses1) _(2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in _course Calculus. _b) Find the names of students who have enrolled in _course Calculus. c) Find the names of students who have enrolled at least one course. _d) Find the names of students who have enrolled in Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).
Convert the following Relation into INF, 2NF, and 3NF and show the functional dependencies. StudentID StudentName Major CourselD CourseTitle InstructorName InstructorLocation Grade D-Building A-Building C-Building C-Building A-Building D-Building A-Building 111 Kevin CS CS201 Bob Computer Marketing Accounting Accounting Jeff 111 Kevin CS МАЗ3 Jeff 111 Kevin CS АCC234 Sarah 222 Alex BA АСC234 Sarah B. 333 МАЗ33 Marketing Computer Marketing Noor MA 444 CS201 Bob Luay Adam BA A 555 AC МАЗ33 Jeff
4. Write the relation matrix for the relation R on the set (a,b.c.d.e.f) which is defined as follows: R={a,a), (a,b), (a,c), (b,a). (b,c). (c,a), (c,b), (d,d), (f.f).
Consider the relations Courses1, Courses2, _Enrollment and Students. Courses cid cname Al Calculus A2 Algebra A5 English Location LI L2 L3 Student(sid, sname, age, level) Courses2 cid A5 Bl B2 name English History b) Courses 1-Courses2 L3 L4 Computing L5 (1) Give the results of the following relational algebra expressions: a) Teid ( name="History' OR 'Computing (Courses2)) c) Courses Courses2 Classroom d) Courses1 Enrollment e) Enrollment / Teid (Courses1) Enrollment sid cid 101 Al 102 A5 103 B1 102 102 Al A2 (2) Write the following query in Relational Algebra. a) Find the sids of students who have enrolled in course Calculus. b) Find the names of students who have enrolled in course Calculus. c) Find the names of students who have enrolled at least one course. _d) Find the names of students who have enrolled in _Calculus or Algebra. e) Find the sids of students who have enrolled in all courses (both Courses1 and Courses2).
Suppose relations R(A,B) and S(B,C,D) are as follows: 3 5 A 1 R B 6 2 4 4 6 8 9 C 5 7 c. The full outer join has 3 NULLs. d. The left outer join has 4 NULLS. S A Compute the full outer join on B, the left outer join on B, and the right outer join on B. In each case, R is the left operand and S is the right operand. Then, answer the following questions for each of the three resu How many rows are there in the result? 2 How many NULL's appear in the result? Finally, find the correct statement in the list below. O a. The right outer join has 2 rows. Ob. The right outer join has no NULLS. D 1 2 3
Store the following fields for a library database: AuthorCode, AuthorName, BookTitle, BorrowerAddress, BorrowerName, BorrowerCardNumber, CopiesOfBook, ISBN (International Standard Book Number), LoanDate, PublisherCode, PublisherName, and PublisherAddress. A one-to-many relationship exists between publishers and books. Many-to-many relationships exist between authors and books and between borrowers and books.a. Name the entities for the library database b. Without creating a set of dependency diagrams, write the relational schema that meet 3rd NF requirements. c. Draw the Crow’s Food entity-relationship diagram for the library database.
"SUPERMARKET STOCK CONTROL SYSTEM" It is an application made for the employees in the Super Market to query the stock of the items more easily. Thanks to a single application, they will have information about the status of the items. According to the above information draw an E-R diagram (Specifiy all entities-relationships-attributes). Show (explain in detail) that the database is at least in 3rd NF.
116. The decomposition of one relation say R into two relations is classified as a. functional decomposition b. ternary decomposition c. binary decomposition d. ordinary decomposition