What is an entity set?

Q: Why do you believe database design requires the use of entity relationship (ER) diagrams?

A: An entity Relationship Diagram (ERD) visual represents a database's conceptual, graphical, and…

Q: Explain the Entity-Relationship model and its use in a database.

A: Intro In this question, we have to understand the Entity-Relationship model in the database. Let's…

Q: What kinds of data would you store in an entity subtype?

A: Entity Subtype Entity subtypes are entered into the ER model in order for decreasing the total…

Q: What kind of data would you keep in an entity subtype?

A: Given: A subtype is  sub-grouping of the entities that make up an entity type that has significance…

Q: Why do you think entity relationship (ER) diagrams in database design are necessary?

A: Entity Relationship Diagram is a conceptual, graphical, and logical structure of a database. Entity…

Q: What are ASSOciAtive entitieS?

A: Given: Associative entity

Q: Describe an entity, an entity type, and an entity set in a database management system?

A: Entity: The entity is an object, place, or thing which has its independent existence in the real…

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: what is the name of the connection in which each instance of data in one entity is represented by…

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

Q: Transform the following entity relationship diagram into a relational schema.

A: There are many different UML diagrams that serve different purposes. You can describe those details…

Q: What type of relationship in the conceptual model is converted to an entity in the logical database…

A: Conceptual ERD models the business objects that should exist in a system and the relationships…

Q: ER diagram to relational schema

A: ER diagram Er  diagram is defined as the interconnection of entities and attributes how they are…

Q: What is the reason for normalised relations may not compromise an efficient physical implementation…

A: Normalized relations may also not jeopardize the efficiency of the simple geometric structure, as…

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: Many to many relationship: - When various(more than one) records in one table are linked to various…

Q: The objects in database description is called a. concept construct b. entity construct c. schema…

A: Given data is shown below: The objects in database description is calleda.concept constructb.entity…

Q: Briefly describe four problems that may arise when merging relations

A: Four problems arise during merging relations and its solution Relation:The relation is a…

Q: In DBMS, the property of interest which further describes the entity is classified as a.…

A: d. attribute

Q: The graphical representation of database description is called a. dynamic schema diagram b. schema…

A: The graphical representation of database description is called schema diagram so the correct option…

Q: What is the Reasons for entity clustering

A: GIVEN: What is the Reasons for entity clustering

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: Explain Single-vAlued verSuS MultivAlued AttriButeS?

A: An attribute is considered single-valued if there is at most one value associated with it at any one…

Q: Define the term Well-structured relation?

A: Well-structured relation • A well-structured relation is defined as the phenomenon where the…

Q: what is Functional Dependency and Normalization?

A: The Answer is

Q: What is PrOPertieS Of relAtiOnS?

A: Given:  Properties of Relation

Q: Create an entity relationship diagram and the relational diagram to show relationship between all…

A: ERD :

Q: creating a relation database schema

A: Below is the required relational database schema:

Q: Given the ER diagram below, create relation schemas to capture the database design.

A: Database Management System(DBMS) is a software for storing and retrieving users data while…

Q: Describe the Entity-Relationship model and its role in a database.

A: In this question we have to understand Entity Relationship model in database. Lets understand the…

Q: What is the reason that normalized relations may not compromise an efficient physical implementation…

A: Normalized relations don't always jeopardize the performance of the simple geometric structure,…

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 are global scope ?

A: Global scope is associated with a variable.  Global scope of a variable means a variable can be…

Q: Computer Science: Why normalized relations may not impair the efficiency of a physical…

A: The answer :

Q: What is an entity supertype and why is it ued?

A: What is an entity supertype and why is it ued?

Q: Define the term Relation?

A: Answer: A relation between two sets is a collection of ordered pairs containing one object from…

Q: What are cardinality constraints?

A: Cardinality is basically the number of elements in a mathematical set. Hence a cardinality. the…

Q: Why do you think entity relationship (ER) diagrams are important in database design?

A: Justification: An entity is a kind of data item or component. In an ER diagram, an entity is…

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: What is an entity?

A: Entity An entity is an object that exists. It can be a single thing, person, place or object.

Q: describes a connection in which each instance of data in one entity is represented by just one…

A: There are three types of relationships that can be represented between entities and are as follows:…

Q: 1. All columns in a relation instance must have distinct data values.  True  False

A: A relation is composed of two parts that are instance and schema. The database is represented as a…

Q: Consider the following ER model, A) describe the database entities, attributes, relationships and…

A: Here, I have to provide a solution to the above question.

Q: 168. The complete description of database which is described in design phase and is changed rarely…

A: Database Schema  A database schema is the skeleton structure that addresses the sensible perspective…

Q: en Entity and ent

A: An entity cluster is a "virtual" entity type that is used in the ERD to represent multiple entities…

Q: entities: Residential students which fields like student id, Student name, exam papers Transfer…

A: Given entities: Residential students which fields like student id, Student name, exam papersTransfer…

Q: Develop an Entity Relationships Diagram (ERD) based on the relational schemas in the 3NF for the…

A: For a relation to be in 3rd Normal Form or 3NF following conditions need to be met: Each table cell…

Q: Why is it that normalized relations do not jeopardize the efficiency of a physical implementation…

A: That normalized relations do not jeopardize the efficiency of a physical implementation structure…

Q: When an entity has the primary key of another " entity as an attribute, this creates: A Parent-Child…

A: Answer is : option A                   A parent table will hold the primary key where as in child…

Q: Give an example of three entities that might exist in a database for a medical office, and list some…

A: Entity: Entity is the basic block for building the data collected about person, place, event, or…

Fundamentals of Managing Data

Data management is creating, organizing, storing and managing the data collected and created by any organization.Effective data management is a crucial part of today's world. Data management provides analytical information on the vast amount of data collected from business applications daily, which helps make critical business decisions and plan and bring out the best strategies.