23. For the following excerpt from an ERD, specify the logical (relational) schema as per the foreign key design in the following ways: a. using directed arcs (A, 1] Minit (A,20] Lname IN,6] Base_salary (A,7] Lic platet (A,20] Fname [N,2] Pct commision (A,30] Vin num Name IN.5) Emp_no [N,5.2] Msrp (0, n) Sells (0, 1) SALESPERSON VEHICLE [A, 1] Gender [N,4] Model_yr [DI,8] Date_hired IA,13] Make

Q: Q7. Consider a database containing two relations: R(A,B,C) and S(D,E,F). For each of three (your…

A: Answer:-

Q: 39 of 40 Let R = (A, B, C, D) be a relation schema with the FD's: A → B and B → A. R has how many…

A: There are 3 super keys in given relation that are ABCD ,ACD and BCD

Q: Given a relational schema, R(A, B, C), and set of functional dependencies over R, F = {A → B, AB →…

A: a)A is not the super key, hence it does not represents the relation uniquely The super key will be…

Q: QUESTION 8 Here's a relation (R), its attributes, and its functional dependencies (F): R(A, B, C, D,…

A: A functional dependency is defined as if in a relation A→B , the values in attribute A have the same…

Q: Consider the following relational database schema that contains information about employees and…

A: {pid,pname} {pid,pname,budget} {pname,managerid} {pname,budget,managerid}

Q: 1. Consider the following relations: Student (snum: integer, sname: string, major: string, level:…

A: Student (snum: integer, sname: string, major: string, level: string, age: integer) Class (name:…

Q: onsider a relation T with seven attributes ABCDEFG where AB is a composite primary key or T. Assume…

A: A)  Primary key for the given relation is AB The FD A ->CEF is a partial functional dependency…

Q: Assume we have two relations R(A, B) and S(B, C). Assume that R = {(1, 2),(2, 3),(3, 4)}, and S =…

A: Answer:-

Q: 1. Consider the following relation: BIKE_SALE(Bike_ID, Salesperson_ID, Date_Sold , Sale_Commission,…

A: The candidate's keys from this relation: { Bike_ID, Salesperson_ID} as the closure of these…

Q: Given the relation below named Student_Registration , answer the following questions. S_id…

A: Relational Schema: A relational schema in a database gives a outline of how data is organized in a…

Q: Consider the relational schemapart(part_id, name, cost)subpart(part_id, subpart_id, count)where the…

A: Recursive SQL query: The below query is a recursive query used to output all the subparts of part…

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: Consider the following schema: Publisher (name, phone, address), PK: name. Book (ISBN, title,…

A: Actually, given information: Publisher (name, phone, address), PK: name. Book (ISBN, title, year,…

Q: Question 3 a) Normalize table 1 to a set of Third Normal Form (3NF) relations. Your answer should…

A: Primary key for the given relation is, (PatientID , DiseaseID) The Fd's possible are PatientID…

Q: 31. In the relational models, cardinality is termed as: a. Number of tuples b. Number of attributes…

A: Here is the solution which is mentioned below:

Q: Normalize Table 1 to a set of Third Normal Form (3NF) relations. Your answer should show all the…

A: A relational database is a collection of tables. A table is a relation that holds values in rows and…

Q: 16.Consider a relation R = (A,B,C,D,E) with the following functional dependencies: {C,E → D,   D →…

A: Given that 16.Consider a relation R = (A,B,C,D,E) with the following functional dependencies: {C,E →…

Q: Consider a database containing two relations: R(A,B,C) and S(D,E,F).  For each of three (your…

A: The required diagram is as follows: Explanation Please refer to solution in this…

Q: 31. A primary key combined with a foreign key creates: A. Parent-child relationship between the…

A:

Q: Consider the relation schemas R(A,B) and S(A,B). Suppose {A } is the key for R and also the key for…

A: Even though {A} is the key for both R and S, the union of R and S has the complete keyset, so here…

Q: Given the following relation schema R(B, N, O, A, T, C) and the set of functional dependencies F =…

A:

Q: Suppose a single relation (table) is used to record the information about students’ enrollment in…

A: Actually, given question regarding normalization.

Q: Let the following database schema be given. Person(idnumber, name, dob, mother, father) primary key…

A: a) Will use CTE to prepare a hierarchical result set WITH #results AS(SELECT idnumber,nameFROM…

Q: the following relational schema of a database library (primary keys are underlined and foreign keys…

A: The SQL query of the given scenario can be written as: Select bookNumber, bookTitle From Book Inner…

Q: of 40 Let R(A, B, C, D) be a relation with FD's: A → B, C → D, AD → C, and BC → A. If we decompose R…

A: If we decompose R into BCNF relations,which of the relations will not be present in the…

Q: Question 3 Consider a relation A(P, Q, R, S, T) with following functional dependencies. i.Р— QR ii.…

A: Relation: f a purposeful dependency X->Y holds true whereverY isn't a set of X then this…

Q: a ->f ab -> cd C->e de -> b bf -> ae a) Identify the weakest normal form that each of these…

A: A)  Primary key is ab.  The functional dependency a->f is a partial functional dependency. It…

Q: ideas 9. Suppose relation R(A,B,CD) has the following functional dependencies 1-B, B- C, BC A, A D,…

A: The answer is

Q: Consider the below given statements: 1. Referential integrity constraints are always specified…

A: Introduction :Given , two statements related to Referential integrity constraints.we have to find…

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

A:

Q: For the given schema, write relational algebra for the following queries. Student (id, name)…

A: 1). Answer πname(σcs3020=code(Student⋈EnrolledIn))   2). Answer πlecturer(σcode=cs1500 OR…

Q: Given the following relation schema R(B, N, O, A, T, C) and the set of functional dependencies F =…

A: F = {C-->OT, O-->AC, CN-->B, CB-->A, B-->N}: R(B, N, O, A, T, C)

Q: Consider a schema R = {A,B,C,D,E}and the following set of functional dependencies: {AB → C,C → D,D →…

A: To find: To find whether the given function is Boyce-Codd normal form or not.

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

A:

Q: Convert the following relation to 2NF, and then to 3NF. Show both conversions. Remember to include…

A: FIRST NORMAL FORM (1NF) : It does not eliminate redundancy, but rather, it’s that it eliminates…

Q: Suppose you have a Relation that has an atomic Primary Key and noRepeating Groups. All non-key…

A: According to the details provided about the relation, the relation is in 2NF. This relation has to…

Q: This question assumes the following relational schema: Employees(employeeNumber, lastName,…

A: the corresponding sql query is given below

Q: . Normalize the table T up to BCNF. Clearly show your steps and state all Primary and Foreign keys.…

A: The answer for the above question is as follows

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

A: Solution :

Q: Question 9. Consider a table R(ABCDE) with the following functional dependencies: A->C, B->D, AB->E.…

A: Given relational table in the normalization

Q: Question 9. Consider a table R(ABCDE) with the following functional dependencies: A->C, B->D, AB->E.…

A: In terms of the normalization of the given functional dependencies

Q: Normalize the following UNF relation to 1NF, 2NF, 3NF, show primary key and foreign keys in all…

A: Each cell to be single valued. Entries in a column are same type. Rows uniquely identified-Add…

Q: Consider the relation scheme R = {A, B, C, D, E, F, G, H} with the following set of functional…

A: Candidate keys are the set of smallest essential attributes that can generate all the values in the…

Q: A relation R is given which is R(A,B,C,D,E,F). It has the following functional dependencies: AB ->…

A: AB -> CDE, B -> F.  Here, we can see the partial dependency so the given relation is not in…

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: Exercise 8.7 If you were about to create an index on a relation, what considerations would guide…

A: The answer to each question is given below. 1. The choice of the primary key is made based on the…

Q: Consider the relational database schema R( A, B, C, D, E, F, G, H, I) with the following set of…

A: Solution:   Below is the answer for the above questions. Hope it will help you

Q: Exercise IV: (a) Given the following relational database schema: R= AB S= BC 2 2 2 21 3 3 Provide…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Let R(A, B, C, D, E, F) be a relation with FD's: {D → C, C → D, D → E, C → E, E → AD, AF → E, D → B}…

A: