Design an EER schema for a database application that you are interested in. Specify all constraints that should hold on the database. Make sure that the schema has at least seven entity types, Four relationship types, 1 weak entity type, four super class/subclass relationships, one of them with disjoint option and other one with overlapping option, two categories, and at least three n-ary (n> 2) Relationship type. Also Design its conceptual Schema by mapping EER Diagram into Relations.

Q: Based on the following domain model class diagram, develop the relational database schemas. Owner…

A: Answer : I attached an relational schema please have  a look  once.

Q: ER-diagrams are high-level design of the Database. The given ER-diagram describes the Dentist…

A: Weak entities are represented with double rectangular box in the ER Diagram      office, supplier,…

Q: of the following best describes a relationship in which each instance ofdata in one entity is…

A: It is defined as an association between two entity types is called a relationship. Entities take…

Q: What is a derived attribute? Give an example. What are the advantages ordisadvantages of storing or…

A: Given: What is a derived attribute? Give an example. What are the advantages ordisadvantages of…

Q: . Generalization is when an existing relationship set participates in another relationship set.…

A: PART 1:- Generalization is when an existing relationship set participates in another relationship…

Q: State a rule that says when to extract an attribute from one entity type and place it in a linked…

A: Let’s first understand what is entity type and attributes: Entity Type: A group of different…

Q: QUESTION 23 Given the relation R(V, W, X, Y, Z) and functional dependencies: • VY -> Y • W-> XZ • VY…

A: The given relation is in First normal form. As the only candidate key for given relation is VY.…

Q: What is the connection between a relation's primary key and the functional relationships between all…

A: Introduction: Relational database theory is built on the foundation of primary and foreign keys.…

Q: Question 12.1 Use the object definition language ODL of the ODMG object model to specify an object…

A: Publication(Catalog, Title) Publisher(Name, City ,Address) Book(Page_count, Format)…

Q: Q2) Define the Entity Relationship (ER) Technique which is used in database design. Then use ER to…

A: Given: Explain Entity–relationship model (ER model).

Q: What is the functional relationship between the main key and a non-key attribute as explained by…

A: As the name implies, a key property will uniquely identify entities, while non-key characteristics…

Q: Your task for this assignment is to complete a database design for the given case studies. Model the…

A: The ERD has7 entities. The entity are: employees, shows , performers, admin staff , skill , venue,…

Q: What is the link between the main key of a relation and the functional connections between all of…

A: Introduction: Primary and foreign keys are the cornerstones of relational database theory. Primary…

Q: Kindly find attached. Normalize the relations into first, second, and third normal form. First,…

A: The answer is given below:-

Q: Produce a relational schema diagram that corresponds to the linked ER diagram for a database for the…

A: The given is a database problem where the relational database is to be created based on the given…

Q: What is an entity set?

A: An entity set is a group of similar entities and these entities can have attributes.

Q: When using the arc implementation to convert a super set entity into a relation, what if the…

A: Arc implementation is considered as supertypes/subtypes data modelling. Like for an Event, it can be…

Q: Explain the functional dependency between the primary key and a non-key attribute via another…

A: Functional Dependency – It is the relationship between any two attributes. Example:  In relation,…

Q: Create a rule that specifies when an attribute from one entity type should be extracted and placed…

A: An entity-relationship model (or ER model) is used to explain the relationships between objects of…

Q: What is an entity instance?

A: It is an object of the class which is represented by the entity of the instance.

Q: Explain the connection between a relation's primary key and the functional dependencies that exist…

A: A primary key is an attribute that identifies a record in a database. It is used to filter 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: An objective of this task is to denormalize a conceptual schema to speed up processing of a given…

A: As per given conceptual schema there are 4 classes  Project class Employee class  Contract class…

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: Define the connection between a relation's main key and the functional relationships between all of…

A: Introduction: As the name implies, a functional relationship expresses the influence of one variable…

Q: Exercise 1 – Medical Clinic System A local medical practice have asked you to help design a simple…

A: (A) Entities (i) Patient - it will contain all patient related details like their name, age, sex,…

Q: What is the functional relationship between the main key and a non-key attribute as explained by…

A: The connection between any two characteristics is known as functional dependency. For example, there…

Q: Discuss the database table options available when implementing subtype associations.

A: Note: we are allowed to answer a single question only at a time and submit this if you want a reply…

Q: d) Both a and b . Suitable level of partitioning is found within the range of a) Tuple and attribute…

A: Actually, partitioning is splitting the database table into many tables.

Q: defines a relationship between two entities in which each instance of data in one entity is…

A: Introduction: Entities are real-world objects with attributes that are stored in a database. Tables…

Q: When working with database entity relationship modeling, should the cardinality between entities be…

A: Cardinality: The maximum or minimum number of elements allowed on each side of the relationship in…

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

A: i have provided solution in step2

Q: When utilizing subtype associations, it is important to discuss the database table options that are…

A: Given:   When utilizing subtype associations, it is important to discuss the database table…

Q: Design: An (ER) and (relational Diagram) by showing as I am an owner of a car rental company…

A: Answer :

Q: Explain how functional dependencies can be used to indicate the following: • A one-to-one…

A: Identifying the functional dependencies: The relationship sets can be indicated using the functional…

Q: →B,C" is one of the functional dependencies that can be identified from the table own below, which…

A: Functional dependency

Q: QUESTION 5 Consider the database schema below. Fruit (ID: integer, Name: String (unique)) Vitamin…

A: Given: To choose correct option.

Q: 1. Create an entity named Doctor and Patient and create a one-to-many mapping using JPA. Doctor id…

A: Answer: I have given answered in the handwritten format in brief explanation

Q: Create a Crow’s Foot ERD for each of the following descriptions. (Note: The word many merely means…

A: Database Management System is essentially a software or application package that controls the…

Q: Consider a relation named as BOOK that contains data about the books in a library. BOOK relation was…

A: Dear Student, It's in first normal form as all the values are atomic ie does not contain multiple…

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

A: A relation is in second normal form, if it is in first normal form and relation must not contain any…

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

A: By giving an example,  "External Schema" and "User View"

Q: sign an Entity-Relationship diagram for the below environment. determine 1-Total participation.…

A: total participation is shown between orders relation and order entity  partial participation is…

Q: Given a relation R(F, G, H, I, J, K) and functional dependencies: • G-> FI • H> JK The candidate key…

A: Refer to step 2 for the answer.

Q: Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following…

A: Given set of Functional Dependency :  A --> B B --> C C --> D D --> E E --> F F…

Q: esign an E-R Diagram for the following scenario. A relational database is to be designed for a…

A:

Q: just answer true/false  a]Disjointness means that every entity of a supertype must be an entity in…

A: As per bartleby guidelines we need to answer only the first 3 subparts in a question. a]Disjointness…

Q: Consider the following Scenario. Design a database for an airline. The database must keep track of…

A: The ask is to design a database for an airline, keeping track of customers and their reservations,…

Q: Consider the following Scenario. Design a database for an airline. The database must keep track of…

A: E-R Diagram:

Q: A rental car agency classifies the vehicles it rents into four categories: compact, mid-size,…

A: Actually, database is a used to stores the data. ERD- Entity Relationship Diagram.