Part 2: Use the following relations to answer question 4. RO R1 a bc d 1 2 2 1 2 3 12 2 4 7 3 1 2 For each of the following relational algebra expressions, draw the resultant relation in table form and write an equivalent expression in tuple relational calculus. 4. a. RO ¤ R1 b. lpc(RO) U Ilb.c(R1)

Q: Part 2: Use the following relations to answer question 4. RO R1 a C C 1 2 2 1 2 12 2 4 7 1 2 For…

A: Given relations R0 and R1 contains 3 attributes each. R0= a, b, c R1= b, c, d Tuple relational…

Q: Part 2:Use the following relations to answer question 4. RO R1 ad be ce 1 2 2 24 1 2 3 1 2 be ce dee…

A:

Q: Part 2: Use the following relations to answer question 4. RO R1 a b b 2 3 4 7 1 2 2 1 2 1 2 3 1 2 4.…

A: a) is join  b) Projection give attributes and union give without duplicates .

Q: Normalize the following given data to 1/2/3 NF. State the relations schema after every…

A: The key for the given relation is (SID, CID)  The FD's possible are SID->s_name,  CID->C-name,…

Q: Given the following relational schema (Hint: the bold text represents a primary key), Department…

A: Lets discuss the solution in the next steps

Q: Given the following relational schema (Hint: the bold text represents a primary key), Department…

A: Here we need to join the relation Department and Professor on the condition department.deptCode =…

Q: Consider the following two tables where Grades.ID is a foreign key to Students.ID. Students (ID,…

A: Here we firstly know about Relational algebra why used in Database.The main use of Relational…

Q: Given the following relational schema (Hint: the bold text represents a primary key), Department…

A: Relational algebra is used to represent relational query using operators.

Q: 1- Use the relations given below to write relational algebra expressions for the following…

A: Select operation is used to selects tuples that satisfy a given predicate(condition). It is denoted…

Q: the following schema ,write the relational algebra queries for the following:…

A: Every database management system must define a query language to allow users to access the data…

Q: This question is based on the following relation and sample data, where Employee Social Security…

A: Actually, database is a used to stored the data.

Q: The following two questions involve the three relations below: 1. R(a, b) = {(0, 1), (4, 5), (8,…

A: The Answer is

Q: Consider the following relational schemas: Formulate the Relational Algebra statements for the…

A: Note : As per guidelines of the company, we are authorized to answer 3 sub parts of a question when…

Q: Write a relational calculus based on the following relations: Professor (ProfID, ProfName, DeptNo)…

A: department (deptId, name, hod, phone) professor (empId, name, sex, startYear, deptNo, phone) course…

Q: RI E2 E1 R4 R2 R5 E4 R3 E3 hat is the minimum number of relations required for the above E-R…

A: According to the question: Given, An ER diagram. We have to calculate the minimum number of relation…

Q: Based on the following table given , a)Write a 1NF relational schema and identify the partial and…

A: Dear Student, In this question primary key is marked with a underline and foreign key is written as…

Q: B2. Consider the following SQL query in the STUDENT relation. SELECT SNO FROM STUDENT WHERE…

A: B2. Consider the following SQL query in the STUDENT relation.SELECT SNO FROM STUDENTWHERE (CR_HOURS…

Q: Describe five features of a relational model in your own words. In your explanation, please include…

A: The given problem is related to a database relational model that arranges the data in the form of…

Q: QUESTION I a. Differentiate between cardinality and degree of relationship b. Define the term…

A: As per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts. Kindly repost…

Q: Provide the relation (relational notation) that represents the user view for the school advising…

A: a. Provide the relation (relational notation) that represents the user view for the school advising…

Q: 2.1 In which Normal Form is the above table? Explain how you arrived at your answer. 22 Explain the…

A: The given problem is related to the normalization process of a database table where the requirement…

Q: Q4) Create necessary tables, fields, foreign keys, primary keys, unique indexes, not null (NN)…

A: In the above ER Diagram, we can see that in the diagram. we have used some strong and weak entity…

Q: Consider the following relational scheme: X1 A1 A2 X2 АЗ А4 A5 The attributes that are part of the…

A:

Q: First determine which normal form (1NF, 2NF, 3NF or BCNF) the above relation is, and why.…

A: Here we identify, which normal form: figure 2: here explanation why it is not in BCNF,3NF and 2NF.…

Q: 1. The BOOK CHECKOUT relation stores data about books checked out by students at a university. The…

A: Book_checkout (studentID,studentname,studentphonenumber,ISBN ,booktitle,checkoutdate,returndate)…

Q: Consider the following relational scheme: X1 A1 A2 X2 АЗ A4 A5 The attributes that are part of the…

A: Given:

Q: a) Describe five features of a relational model in your own words. In your explanation, please…

A: Below are the five features of a relational model which is given below :

Q: a) Describe five features of a relational model in your own words. In your explanation, please…

A: Solution) E.F. Codd  proposed  Relational Model in the form of relations or tables.  Relational…

Q: Assume the following relations, write the Relational Algebra equations: BOOKS(DocId, Title,…

A: 1. ΠTitle,Year(BOOKS) 2. σ Major= "CS" (STUDENTS)

Q: The following functional dependencies describe a relation that is in 2NF. Customer_ID, Store_ID→…

A: Rules of 2NF: Table must be in 1NF No non-prime attribute is dependent on the proper subset of any…

Q: Create relational schemas for the ER diagram given below. Indicate clearly the primary and foreign…

A: Question given -  An E-R diagram is given. Convert this E-R diagram into relational schema.…

Q: r a relation r (A,B,C,D). If we wanted to generate the information produced by select A, B, C,…

A: Lets see the solution.

Q: Assume the following relations, write the Relational Algebra equations: BOOKS(DocId, Title,…

A: Answer:

Q: Write the following queries in relational algebra Customer (sid, name, career) Commodity(cid, title)…

A: In relational algebra σ is used to select operation σname="Networks"Books will return the tuples of…

Q: Solve only 1,2,3 please fast.       Consider the following scheme   Supplier (sid, Sname,…

A: Solution :

Q: Transform the diagram to a relational schema that shows referential integrity constraints

A: Relational schema: ERDPlus permits drawing customary relative Schema parts Tables (Relations) Table…

Q: :You have a relation R(A, B, C, D, E). Provide one constraint, written in both relational algebras…

A: Below is the query to add required constraint:

Q: Write the following queries in relational algebra Customer (sid, name, career) Commodity(cid,…

A: Objective: Given three table schema  Customer (sid, name, career) Commodity(cid, title) Price (sid,…

Q: a. Identify all dependencies, including all transitive dependencies. b. write a relational schema…

A:

Q: Create relational schemas for the ER diagram given below. Indicate clearly the primary and foreign…

A: Relations :  =>   Relation is sometimes used to refer to a table in a relational DB. =>   It…

Q: Informally describe the conditions to be met for a relation to be in Second Normal Form. In terms of…

A: Second Normal Form, it must satisfy two conditions: The table should be in the First Normal Form.…

Q: Given the relation R(A, B, C, D, E, F), the following functional dependencies exist: B --> C, D D…

A: Given : R(A, B, C, D, E, F) B --> C, DD --> F

Q: Based on the above Relations/Tables, write description of violations of each of the 3-constrains in…

A: Domain Constraints: This constraint says that the value of the attribute must be available in the…

Q: Assume, a sales firm using an automated system in their work. They maintain a database of…

A: The given relation is already in 1NF since the atributes are not multivalued attribute. Ptrimary key…

Q: Book relation in? Why? (b) Decompose Book info 2NF relations. (¢) Decompose Book into 3

A: I have given solution below

Q: Consider the following relation with functional dependencies as shown below. R{sno, sname, age, cno,…

A: Given dependencies are: A -> B, CC -> FD -> E Given relation: R(A, B, C, D, E, F)   Since…

Q: Consider the following relation with functional dependencies as shown below. R{sno, sname, age, cno,…

A: Given:

Q: Write the relational algebra formula to apply an INTERSECT relational operator to the tables shown…

A: An intersection is defined by the symbol ∩. Example- Suppose there are two tables A and B. Then A ∩…

Q: Write the relational algebra formula to apply an INTERSECT relational operator to the tables shown…

A: INTERSECT: - The rows appearing is both BOOTH and MACHINE table is yielded in this case as a result…

Q: Write the following queries in relational algebra Creature (name, category, status) FoodChain…

A: To understand the problem, lets construct the table: