translate the following er diagram  1. normalize the relations to 3NF

Q: Give three examples of when it would be appropriate to use a surrogate key instead of the primary…

A: requirements for suggesting a substitute key There are three circumstances that indicate a…

Q: Can the foreign key be extracted from another table that is not connected to it in entity…

A: Foreign keys are a part of table which are being sourced from some column in a different table.

Q: Consider the following E-R diagram: E1 R4 E4 M M R1 R3 R5 N E2 M R2 E3

A: Answer : - Total number of relation in given table is 5.

Q: Why is normalization useful, given that EER conversion will typically lead to a normalized set of…

A: In this answer I will be discussing Why is normalization useful, given that EER conversion will…

Q: By giving an example, define the following terms: A. Coding B. Relation and Relationship

A: Given data:-

Q: The use of composite attributes are avoided in relation schema when the relation schema conforms to…

A: The use of composite attributes, are avoided in a relation schema when it is said to be in First…

Q: (6) What are the 2 properties we need to keep in mind while doing decompositions to achieve a…

A: 2 properties are : ✓Lossless Decomposition: If the information is not lost from the relation that is…

Q: Normalize the 1NF relation to 3NF showing the resulting 2NF and 3NF relations. Show your work in…

A: Given Relation is, R(A,B,C,D,E,F,G,H,I,J,K,L) Key attributes are A, B, C The functional dependencies…

Q: Description of three circumstances in which it is appropriate to generate a replacement key for the…

A: In computer code engineering, incremental Development might be a process that stresses the value of…

Q: aaa A d N R T bbb B N S CCC Convert the above ER diagram to relations in the normal manner, and then…

A: An ER diagram is an visual representation of the entities, attributes and relationships within a…

Q: Given the following ER-diagram, convert it to relational model, with primary keys ceys clearly…

A: Here the relationship between Driver and Bus is 1:M. So include primary key of entity on one side as…

Q: Map the following ER-Diagram into schema Diagram. Note: Must state the PK/FK example R3(A7/Pk, A5,…

A: The relationship between 1 and 2 is 1:M. So we need to include primary key of relation 1 as foreign…

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: 2. Draw UML diagram showing the following relationships: a. One to many b. Many to many (using…

A: A UML diagram can be useful to corporations and other individuals who want to simplify the…

Q: Describe the differences in meaning between the terms relation and relation schema.

A: A relation schema is the combination of list of attributes and their related domain types. An…

Q: Help normalize this into 4NF and make a diagram please? Or just explain the relations I should do.…

A: Here are the problems in existing table / relation: - Address and email are combined into a single…

Q: f the same meaning, b

A: There are two methods of expressions as,

Q: What are three reasons why the main key of a relation need to be replaced with a surrogate key?

A: substitute key: It is a key that has no contextual significance but is utilised in data analysis to…

Q: Explain three scenarios in which a surrogate key for a relation's primary key should be generated.

A: Introduction Explain three scenarios in which a surrogate key for a relation's primary key should be…

Q: What are three signs that a surrogate key should be generated for the primary key of a relation…

A: A surrogate key is one that serves no practical or operational purpose. It's "artificial" and made…

Q: List three criteria that indicate that a surrogate key should be generated for the main key of a…

A: We have to write three criteria that indicate that a surrogate key should be generated for the main…

Q: FK (if any) for each relation. Apt.# City St fname Iname name Ad id id name address (0,1) (1,1)…

A: Here relationship between Administrator is 1:1 where participation of Administrator is partial and…

Q: For relation (R), its attributes and its functional dependencies (F): R(A, B, C, D, E) CD-> B A- D…

A: A relational schema R is considered to be in Boyce–Codd normal form (BCNF) if, for every one of its…

Q: Question 12 Describe and illustrate the process of normalizing (step by step from 1NF till BCNF) the…

A:

Q: How does the primary key of a relation relate to the interdependencies among its other attributes…

A: Answer: A primary key-foreign key relationship characterizes a one-to-numerous connection between…

Q: 13 of 40 Consider the following E/R diagram with isa relationships, noting that attribute a is the…

A: The correct relation for given ER diagram is ST(a,b,c,d)

Q: Elaborate the MLDR (Logical Relational Data Model) which corresponds to the following Entity…

A: In an entity relationship (ER) diagram, a logical relational data model (LRDM) graphically depicts…

Q: Define three conditions under which it is appropriate to use a surrogate key in place of the primary…

A: Prerequisites for the suggestion of a surrogate key. There are three circumstances that indicate it…

Q: List functional, partial and transitive dependencies if exists in the table given in Figure 01.…

A: The solution is given below.

Q: An entity-relationship diagram (ERD) is a specialized graphic that illustrates the relationships…

A: The solution for the above given question is given below:

Q: Identify FIVE properties that a relation must have in the relational model.

A: A relational database is a type of database that organizes data into tables with rows and columns,…

Q: If lossless-join and preserving functional dependencies in relations are required, what is the best…

A: 3NF is the best normalization that is able to be always met, if lossless-join and preserving…

Q: Convert any E-R diagram in a Relation.

A:

Q: how to map ERR model to relational model

A: In the above question, a statement is mentioned

Q: ) Identify ALL errors and correction on the entity relationship diagram (ERD) given in Figure 5.…

A: Entity Relationship Diagram

Q: Could you please provide an explanation of the three circumstances in which a surrogate key need to…

A: A surrogate key is a system-generated, unique identifier used to identify a record in a relational…

Q: a) Maya Media owner plans to build a Java program which uses an input file for storing the…

A: a) Maya Media owner plans to build a Java program which uses an input file for storing the…

Q: Which of the following statements is true about the above E-R diagram? I. The attribute G will be…

A: The given diagram is entity relationship diagram that has entities and relationships among the…

Q: a) Maya Media owner plans to build a Java program which uses an input file for storing the…

A: a) Maya Media owner plans to build a Java program which uses an input file for storing the…

Q: Explanation of three circumstances in which a surrogate key should be generated for the main key of…

A: Surrogate key: It is a key that does not have any contextual meaning but is used to identify the…