With suitable example, explain what is Data Redundancy. Consider the relation Treatment with the schema Treatment (doctorID, doctorName, patientID, diagnosis) and functional dependencies; doctorID doctorName patientID diagnosis D001 Mohan PAT123 Fever D002 Vijay PAT110 Allergy D003 Jenifer PAT112 Fever D002 Vijay PAT121 Cold   Describe the three (3) types of anomaly that can arise for this table with example records

Q: produce a list of relations indicating the primary key, columns and foreign keys.

A: Given data:Given columns:customerIDcustomerNamecustomerCurrentAddress…

Q: Use normalization to decompose a relation with anomalies into well-structured relations?

A: Yes, Normalization are used to decompose a relationship with anamolies into a well structured…

Q: create an ERD and database creation script for a hypothetical conference of ornithologists. The name…

A: Her i explain the erd and write database script in simple format:…

Q: Consider the database schema below for hotels in countries. A country have many hotels, and the same…

A: Lets see the solution.

Q: How do you represent an M:N ternary relationship in a relational data model?

A: Answer: Representation of M:N ternary relationship in a relational data model Ternary relationship:…

Q: Transform the given ERD (given on next page) into Relational Model.

A: Given: Transform the given ERD (given on next page) into Relational Model.

Q: Draw the corresponding ERD.   You can do this at the end of this Word Doc. if you need more space,…

A: The ER diagram is

Q: Explain normalization in data modeling. What are the benefits of normalization, and what are the…

A: Normalization is a critical concept in the field of data modeling, primarily used in relational…

Q: What's the difference between data independence and structural independence, exactly

A: Answer is

Q: If a relational model exists, what is the overall term for characteristics, and how are they used?

A: One or more tables ("relations") comprising columns and rows are used to store information in the…

Q: Consider the following Schema of Shaheen Airline Pakistan; they want you to generate reports by…

A: ER diagram helps to elucidate the flow and structure of the info style and conjointly the logical…

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: Consider the following schema for a student relation. {Student ID, Last Name, First Name, Course ID,…

A: Entities:  student, faculty, course and section.  Relationships: student <--m:n--> course…

Q: For the following table for student grades, create a relational data model after normalization using…

A: Here our task is to create the given table in mysql which follows 3 NF. Here as we can observe…

Q: How do you represent an M: N ternary relationship in a relational data model?

A:

Q: Consider the database for a company named WPC that contains data about company employees,…

A: According to the Question below the Solution:

Q: Extract and write down the DB Schema for the following E-R Diagram. You need to write the name,…

A: Terminology used in this E-R diagram:

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: QUESTION 2 Consider the database schema below:    Company (CompnayID: integer, CompnayName:…

A: Definition of Candidate Key in DBMS: Candidate keys are super keys that don't have any redundant…

Q: How does the "third normal form" improve upon the "second normal form" in relational data modeling?

A: Database normalisation involves organising the fields and tables in a database to minimise…

Q: that consists of five tables. Primary keys are (BOLD and Italicized). Attributes with the same names…

A:

Q: Use a suitable example to provide a thorough description of the relational model.

A: A relational model describes how data is stored in a relational database. A relational database…

Q: Transform the given ERD (given on next page) into Relational Model. P Id Date of Patient Birth Date…

A:

Q: fy the Functional dependencies c) List down the keys

A: Question   a) Split Composite attributes (where needed / if any)b) Identify the Functional…

Q: Answer questions 2.1 to 2.4 based on the following schema. Note that primary keys are in BOLD. Note…

A: Lets discuss the solution in the next steps

Q: Give some instances of relations (tables) that may have more than one candidate key in their…

A: Suppose we have relation between Driver and Car where driver will ride only car and a car will be…

Q: Convert the preceding ER diagram into a relational DB schema. (I want you to do this yourself, not…

A: A Database is a collection of related  information. A relational schema is a design of the database.…

Q: Consider the following relational database schema. The primary keys are underlined. The foreign keys…

A: The Queries for creating the tables and inserting data are given in the below step   TASK table:…

Q: Please help with the database system question down below: Illustrate a instance of sales invoice and…

A: The entities present in the given diagram are: Car Salesperson Sales Invoice Customer Mechanic…

Q: Consider the following relation that involves student data: RADE (ClassName, Section, Term, Grade,…

A: Primary key for the given relation is (ClassName, Section, Term, StudentID)  Here the functional…

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: How can data normalization be used to check the results of the E-R diagram-to-relational database…

A: According to the information given:- We have to define data normalization be used to check the…

Q: To eliminate duplication in relational databases, what phrase is used to refer to the practice of…

A: Solution: The correct answer is: D:Normalization explanation: Normalisation is the process of…

Q: Convert the following ERD into relational schema. It should include the relation names, attribute…

A: Convert strong entities into relational tables. Convert weak entities into relational tables.…

Q: Consider the following data about pets, where an owner can own many pets, but a pet belongs to one…

A: Third Normal Form (3NF): The relationship is in 3NF if in 2NF but it does not include a partly…

Q: Use a suitable example to provide a thorough description of the relational mode

A: Introduction Relational database modelRelational info may be a kind of knowledgebase that stores and…

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.