To map ERD to relational database, in which there is two entities and one to many relationship between the two entities, then usually the mapping results in how many tables? O 4 O 2 O 3 O It dependends on ER and Assumptions

Q: tionship (ER) diagrams so important for database des

A: Introduction: An entity relationship diagram depicts how these entities are related to one another.…

Q: Describe the following minimal desirable transparency aspects of a distributed database management…

A: Introduction: Actually, a distributed database is a single logical database that is made up of a…

Q: Which ones are super keys for course? (a) course id (b) course id, title (c) course id, title,…

A: The attributes “course_id” and “title” can be used to identify the rows of “course” table uniquely.…

Q: Design a Relational Database by Mapping the following Entity-Relationship Diagram (ERD) into…

A:

Q: Repetition of information and a lack of capacity to describe data are two examples of this. Justify…

A: Relational database: A relational database divides data into tables that may be connected together…

Q: In a relational database, database normalization is a critical step in creating and structuring…

A: Introduction: Data that is inconsistently or illogically stored may lead to a variety of issues.  A…

Q: A professor teaches many courses in a university. However, some professors who are the…

A: Here the entity we have are Professor Course A professor can teach zero or many course. Therefore…

Q: Convert the following ER diagram into a relational database schema, be certain to indicate primary…

A:

Q: In what ways is it better to use the same data model for both conceptual and logical design, instead…

A: Given: A comprehensive and optimized data model assists in the design of a streamlined, logical…

Q: A database table is in 2nd Normal form if it is in 1 normal form and A. All non-key fields depend on…

A: A relational database is in 2NF , if it is firstly in 1NF that is free from Multivalued attribute…

Q: ere are several pros and downsides to database systems. Consider a few examples of how these main…

A: Drawbacks of DBMS : 1. Increased costs: Database systems require sophisticated hardware and…

Q: Assume that you have to design a databaseto manage books issued by your universitylibrary.…

A: Primary key column has unique data. It uniquely identifies record in a relational database table.…

Q: Use MS Visio to create relational data schemas and data dependency diagrams for all entities…

A: Hello student

Q: Construct a Relational Database Schema using this

A: Schema for the table “BANK” is as follows, Schema for the table “BANK_BRANCH” is as follows,…

Q: database design for both the CD Database problem and the Warehouse Problem

A:

Q: The three-layer architecture has the primary objective of separating each user’s view of the…

A: ⦁ The three-layer architecture database are mostly based on ANSI-SPARC database architecture. ⦁ IT…

Q: Explain the idea of physical data independence, as well as its significance in relation to database…

A: If you want to be physically independent of your application programmers, you can do it without…

Q: Figure 2 shows an ER schema for a database that may be used to keep track of Pizza ordering system.…

A: Answer in step2 Note--since in E-R diagram cannot show foreign key so we are giving possible foreign…

Q: QUESTION 4 Convert the following ER diagram into a relational database schema, be certain to…

A: Convert ER diagram into relational database schema.

Q: In a relational database, database normalization is a critical step in building and structuring…

A: what are repercussions of designing database without normalization? is database still functional?

Q: Using Laravel 8, make a scenario that college, student and department have relationship, define…

A: SUMMARY: - hence we discussed all the points.

Q: Exercise Consider the following relational database: (STDNO, SNAME, DEPTNO#) (DEPTNO, DNAME)…

A: Below are the DDL commands to create given tables:

Q: What

A: Primary key In the diagram, the primary key for section is sec_id. A primary key is a key in…

Q: Explain the terms "information repetition" and "inability to express information." Explain why each…

A: A Relational database architecture should be well structured so as easily retrieve the amount of…

Q: Figure 3 shows an ER schema for a database that may be used to keep track of part of an University…

A: STUDENT(STUDENT_ID, HOBBY,DOB,STUDENT_NAME, ADDRESS, COURSE_ID) LECTUREE(LECTURER_ID, LECTURER_NAME)…

Q: Q2. By giving an example, define "External Schema" and "User View"

A: ANSWER : EXTERNAL SCHEMA : An external schema describes the part of the database which specific user…

Q: Create a relational database schema from the ERD in 3.1 showing all tables in 3NF. Each table should…

A: A schema is simply a list of each table name and its fields/attributes in a database as in the…

Q: Consider the following database schema and specify the following queries or views in SQL.…

A: a)select SSN,name from EMPLOYEE where SSN in(select SSN from WORKON group by SSN having…

Q: What does it mean when a relationship is well-structured? In logical database architecture, why…

A: Introduction: A database is a logically organised collection of structured data kept electronically…

Q: Suppose, for a Salat management system, you have the following information: Person Name,  Gender…

A: 1. Updation/deletion anomalies If the user performing the update in a database table, When…

Q: 1. Provide an example of different "views", and describe where these can be found in the three-layer…

A: -Our guidelines binds us for first question only.    - The first question is to provide the examples…

Q: A database table is in 3rd normal form if A It is in 2d normal form (2NF) and in 1" normal form(INF)…

A: Actually, database is a used to stores the data/information.

Q: Explain normalization technique with respect to a redundant and non-redundant database table.

A: The Normalization technique with respect to a redundant and non-redundant database table:…

Q: What does it mean when a relationship is well-structured? In logical database architecture, why are…

A: Given:

Q: In designing a relational database, why might we choose a non-BCNF design?

A: In designing a relational database, why might we choose a non-BCNF design

Q: Consider the following database schema: • Tb_Supplier(Supp_ID, Name, City, State) •…

A: Required : correct option for dice operation

Q: When mapping entities to one another for a relational database, there are several different…

A: Defined the mapping relationship in a relational database

Q: Discuss the trade-offs involved in database normalization, including the advantages and…

A: The database is an organized collection of structured data to make it easily accessible, manageable…

Q: QUESTION 4 Convert the following ER diagram into a relational database schema, be certain to…

A:

Q: A database table is in 3rd normal form if A It is in 2nd normal form (2NF) and in 1" normal…

A: A database table is in 3rd normal form if it is in 2nf and all non-key fields depend only on the…

Q: Transform the ERD below to a database design. Identify the primary keys and foreign keys. Answer…

A: Solution ::    Business rules refer to types of constraints that are present among different…

Q: Figure 1 shows an ER schema for a database that may be used to keep track of part of a Hospital…

A: Entity-set schema: DOCTORS(Name, Address, Specialization, Qualification) PATIENTS(Type, Details)…

Q: A relational database cannot allow many-to-many connections, do you have any evidence for this…

A: According to the information given:- We have to define A relational database cannot allow…

Q: Define and discuss the advantages and disadvantages of materialized views in databases.

A: A view in a database is a query that defines a virtual table i.e. a view created using a query in a…

Q: Consider the following database schema for Players and contracts with different teams. Player (…

A: Question given -  Table schemas are given of two database tables. These tables are already in 1NF.…

Q: Explain how the ACID paradigm of database architecture may be applied to two non-financial examples.

A: The term ACID refers to the four important qualities of a transaction in transaction processing:…

Q: Convert the following ER diagram into a relational database schema, be certain to indicate primary…

A: The main entities of the given ER diagram are: LOT ProductionUnit RawMaterials Hence the…

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.