Given Aiis the ith attribute, Di is the ith domain name, which one of the following expressions is a relation schema? ( ) Re (A1:D1, A2:D2, A3:D3,…, An:Dn) ( ) (A1:D1, A2:D2, A3:D3,…, An:Dn) ( ) Re (A1, A2, …, Ai,…, An) ( ) Re (D1: A1 , D2: A2, …, Di: Ai,…, Dn: An)

Q: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Answer(4) EmployeeProject(EmpeNum (PK), ProjNum (PK), HoursWork, DateStartWorkOnProj) The Table is…

Q: onsider the follow d R2 (D, E, F). 1 ABC 153 5 10 4 5 4 3

A:

Q: has two relations ch a is the primary is the primary key nce of P has 70 Tup s 42. What is the m in…

A:

Q: Please written by computer source The following relation is an extract from a restaurant…

A: Introduction : This question involves analyzing a relation from a restaurant point-of-sale (POS)…

Q: It is feasible to design a link such as sec course from a collection of many-to-one connections.…

A: INTRODUCTION: Each table must have a primary key to guarantee the entities' integrity. Null values…

Q: Vendor order (vendor no, order no, vendor name, qty provided, price/unit) is a second normal form…

A: Vendor order data is an essential component of many business processes, and it is important to have…

Q: Take a database, having FDs as: DOB->Age; Age->Eligibility; Name->RollNo; RollNo->Name;…

A: Here, we are going to find out the normal form for  the relation (RollNo, Name, DOB, Age). First we…

Q: Reference: A --> B--> C   QUestion?  what is the defintion of this type of relationship and what…

A: 1) A transitive relationship is a type of relationship between entities or elements where the…

Q: An ID-dependent Weak Entity typically result in a table with a compound primary key with at least…

A: A weak entity in a relational database is one that can't be uniquely identified by just its…

Q: Analyze the following relation, a) write the types of functional dependencies; c) perform the…

A: For the above table, keys are not defined. Keys can be identified using real time conditions. For…

Q: Describe three circumstances in which a substitute key for a relation's primary key should be…

A: Conditions for recommending a substitute key Three factors indicate that a surrogate key should be…

Q: Describe three circumstances in which a substitute key for a relation's primary key should be…

A: The question has been answered in step2

Q: database relation R into relations R₁ and R₂, we want R₂ MR₂R so that no tuples in R is lost. This…

A: In other words, lossless decomposition is a way of normalizing a database by breaking down a large…

Q: Give examples of relations that are: (a) reflexive and symmetric but not transitive (b) reflexive…

A: (a) Reflexive and symmetric but not transitive:   Let's consider a set A = {1, 2, 3}, and define a…

Q: Random Hospital Example ERD Problem Follow the Simple Procedure for ERD diagramming to design an…

A: ans given below

Q: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Answer(2) Employment(StdNum (PK), SubNum (PK), Grade, CreditValue) The Table is present in 1NF as…

Q: 2 Consider the following functional dependencies for the given relation. R={A, B, C, D, E, F) AB->CD…

A: Dear Student, The answer to your question is given below -

Q: s1 s2 s4 s3 $5

A: State Move Testing may be a dark box testing procedure in which changes made in input conditions…

Q: Consider the following relations: Employee(E_id: integer, E_name: string, Age: integer, Salary:…

A: Referential integrity constraints are rules that ensure that the references from one table to…

Q: It is feasible to design a link such as sec course from a collection of many-to-one connections.…

A: Yes, it is possible to design a database schema with a many-to-one relationship between two…

Q: Consider a relation R with six attributes A, B, C, D, E, F. You are given the following…

A: In the context of databases, a relation refers to a table or a set of tables within a relational…

Q: In the following, assume that A = {a,b,c,d} and that R : A ↔ A. Determine whether each relation is…

A: These are the some important term which are used to derive the following properties:-

Q: Based on the following functional dependencies, for the relation SCHEDULE bring it into a set of…

A: To bring the relation SCHEDULE into a set of 3NF relations, we need to identify the functional…

Q: If aRb ånd bRc together imply cRa. Which of the following options is/are correct? (a) If a relation…

A: The answer is

Q: Give two examples of a relation and their candidate key

A: Candidate key :                          A candidate key is a set of characteristics that uniquely…

Q: Given the relation R(C, D, E, F) and functional dependency: C-> DF Which of the following functional…

A: Answer to the above question is in step2.

Q: For each one of the domain specification given below, identify all the functional dependencies, and…

A: Database Management System. 1NF: A relation is in 1NF if and only if all underline domain contain…

Q: hich of the following functional dependencies are satisfied (and not satisfied) by this relation and…

A: functional dependency in DBMS.

Q: AgencyID(PK) AgencyLocation RENT AGENCY HO VehicleClassID(P K) RENT VEHICLE CLASS RentalRate has…

A: About partial dependency:…

Q: When is it necessary to represent a many-to-many connection using an associated entity?

A: According to the question Many-to-many connections are likely the trickiest connections to uncover…

Q: Which of the following functional dependencies are satisfied (and not satisfied) by this relation…

A: (a) A → B False why ?? because you can't able to identify the value of B uniquely using A because…

Q: gender birth-date age name name name hospital M patient buy M medicine 1 ID name cpr phonenum name…

A: The question has been answered in step2

Q: Describe three circumstances in which a substitute key for a relation's primary key should be…

A: Conditions for recommending a substitute key Three factors indicate that a surrogate key should be…

Q: Multivalued dependencies are avoided in relation schema when the relation schema conforms to – (a)…

A: Answer: Multivalued dependencies are avoided in relation schema when the relation conforms to 4NF.…

Q: Question 2: The UML display the mediator pattern, describe uml and the relations, build the code in…

A: In this uml diagram inheritance occur. Below i write simple Java code: explanation: In given uml…

Q: For these questions, there exists 4 relations: R(A,B,C), S(C,D), T(D,E,F), and U(B,G). The size of…

A: Solution :   As per given data :    4 Relations are given below : R(A,B,C), S(C,D), T(D,E,F), and…

Q: Assignment: Which of the following links are equivalent/inequivalent? Where links are inequivalent,…

A: Which of the following links are equivalent/inequivalent ? what links are inequivalent .what is the…

Q: Create a database Entity and Relationship Diagram (ERD) for the following application (Submitted An…

A: In this question we have to design a Entity-Relationship Diagram (ERD) tailored to the structure and…

Q: Describe three circumstances in which a substitute key for a relation's primary key should be…

A: The answer for the above question is given in the below step.

Q: List five properties of relations.

A: Given: five properties of relations.

Q: Assume that the following graph represents a relation. Which of the following is true about the…

A: given the following graph represent a relation which of the following is true.

Q: Convert the following Relation into INF, 2NF, and 3NF and show the functional dependencies.…

A: The answer is