Answered: Weak entities mean what? Key is...…

Weak entities mean what? Key is... Example needed. What's "various specialisation"?Does the ER diagram include me? Case study and illustration.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: Draw a class design of a gpa calculator including Entity Classes Attributes: datatypes,…

A: According to the question, we have to Draw a class design of a GPA calculator. In step 2, we will…

Q: ake a diagram or figures that shows high cohesion and loose coupling

Q: Is it true that associative entities are likewise considered to be weak entities? What is your…

A: Introduction: An associated entity is one that is placed between two other entities to break up a…

Q: Use a named entity recognition tool to demonstrate the software's functionality. Give an account of…

A: Named Entity Recognition (NER) is a subtask of Information Extraction (IE) that seeks to locate and…

Q: Analyze the diagram bellow and transform it from conceptual model to a logical model using the…

A: Logical model: it defines the relationship between the entities and data elements…

Q: With neat diagram, explain the iterative process of calibrating a model.

A: Given question has asked to explain the iterative process of calibrating a model with neat diagram.

Q: Consider the differences and similarities between concentration and breadth. There is an instance…

A: In the background of file systems, the terms "attentiveness" and "breadth" aren't used in the…

Q: Provide a separate ER diagram representing each of the following situations. 1.A is an entity. It…

A: ER diagram 1)

Q: Is it accurate that associative entities are also regarded as weak entities? What justification or…

A: Associated thing: • The connection between entity instances provides more detailed properties. • An…

Q: . What are the distinctions between smooth models and layered models when it comes to VES modeling

A: Introduction Virtual Network Functions (VNFs) are virtual network services running on open computing…

Q: Write an abstract text about CMMI ( Capability Maturity Model Integration). Also use graphs, tables…

A: Given: Write an abstract text about CMMI ( Capability Maturity Model Integration). Also use graphs,…

Q: Given a UML a diagram with multiplicity that is either “ 1….∗” or “ 0….∗”. Explain what difference…

A: A Unified Modelling Language diagram may be a diagram supported the modelling language with the aim…

Q: Consider the differences and similarities between concentration and breadth. There is an instance…

A: Concentration emphasizes specialization and depth of knowledge in a specific area, while breadth…

Q: I'm confused about the distinction between a smooth model and a layered model when it comes to VES…

A: Introduction: VES stands for Virtual Network Function, and there are two sorts of models used in…

Q: In this section, we will learn the meanings of the following terms: association, class diagram,…

A: Hey, “ Given that you have posed a question that has numerous subparts, we shall answer the first…

Q: How is Booch methodology similar to Coad/Yourdon object oriented methodology? a. Both included data…

A: How is Booch methodology similar to Coad/Yourdon object oriented methodology? a.Both included data…

Q: Make a distinction between physical and schematic models by referring to relevant examples.

A: Let us know about the model first. A model is an abstraction of reality or a representation of a…

Q: Create a diagram with one entity set, P erson, with one identifying attribute, Name. For the P erson…

A: An Entity is a component of data, mostly it forms table name in database. Attributes describes…

Q: There is value in adopting either descriptive or prescriptive models, but which is more so?

A: Answer: Both descriptive and prescriptive models have value in different contexts, so it's difficult…

Q: What is weak entity type? The formula? For instance. Alternative specialisation?What does the ER…

A: A weak entity kind in an Entity-Relationship (ER) replica is an entity that cannot be Exclusively…

Q: A weak entity type is what? The secret? Give an instance: A specialization of attributes?What does…

A: In the world of database design, entity-relationship (ER) modeling plays a crucial role. ER diagrams…

Q: DRAW ER diagram for the Scenar In a college, STAFF is identified by StaffName (that consists of Fnam…

A: The entity of ER diagram is Staff Course Book The relationship between course and book is many to…

Q: Are associative entities also weak entities? Why or why not? If yes, is there anything special about…

A: Associative entity: • An associative entity associates the instances of one or more entity types. •…

Q: Course: Organization Modeling for DT (11) The Ecosystem map diagram can be used to model the…

A: Introduction: Organization modeling is a process of creating a graphical representation of the…

Q: Please specify weak entity type. Its secret? An example What is attribute specialisation?ER…

A: a weak entity is a type of entity that cannot be uniquely identified by its own attributes.…

Q: Choose a real-world issue with at least three sets of Venn diagrams. Describe why a Venn diagram is…

A: Venn diagrams are effective tools for visually describing intricate relationships and…

Q: Q.3/ Give one example for each type of associations in the domain of class diagram.

A: If one object owns another object. And another object cannot exists without the owner, that it is…

Q: Generalization is Select one: O a. The process of giving an entity special attributes O b. The…

A: Basically Generalization is the process of defining general entity from set of specialized entities.…

Q: Consider two sets of entities A and B, each of which has the property X (among other qualities whose…

A: Summary ER model or diagram is also known as ER Schema. The ER model is built on two key ideas:…

Q: Provide explanations for the following terms: association, class diagram, event, object, object…

A: Association: In object-oriented programming, an association refers to the relationship between two…

Q: Exercise No.1. How to explain in details the diagram? Exercise No.2. How to explain in details the…

A: Exercise 1: The diagram shows a class called "DigitalClock" with two integer-based characteristics,…

Q: Question No.1: Draw the EER diagram(step1-4 as mentioned below) of a company that organizes…

A: 1)entity types The strong entities are: branch,manager , employee, room, and payment The weak…

Q: "Weak entity type" means what? Does it hide something? What's "attribute"?How would an ER chart show…

A: What is ER chart: An ER (Entity-Relationship) chart, also known as an ER diagram, is a visual…

Q: Can you define the weak entity type for me? Is there a secret to it? Provide an instance Just what…

A: The Entity-Relationship (ER) model is a popular data modeling technique that is used to represent…

Concept explainers

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.

Question

Weak entities mean what? Key is... Example needed. What's "various specialisation"?Does the ER diagram include me? Case study and illustration.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Sympathetic Weak Entities in ER Modeling:

VIEW

Step 2: Unraveling the Concept of Various Specializations:

VIEW

Solution

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

What is meant by the words "universal description," "discovery," and "integration" respectively? (UDDI)?
There are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to various occupations? So, why are these structures so special? There are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to various occupations? So, why are these structures so special? There are certain constraints imposed by selection structures in computer programming, notwithstanding their use. The same procedure must be followed in all cases, whether dealing with consumers, online clients, or other sorts of transactions. Is it true that various criteria apply to…
Define Working Set. What is the context? What are consequences of incorrect working sets? (short answer is ok)
Consider two sets of entities A and B, each of which has the property X (among other qualities whose names are irrelevant to this discussion) among other attributes. Can the design be improved if the two Xs are not connected?
I nee help in this question of MCQ via the UML Picture. Q)What is the class relationship that best describes Car and Driver? Group of answer choices a)Car (whole) : Driver (Part) (Aggregation) b)Driver (whole) : Car (Part) (Aggregation) c)Car (whole) : Driver (Part) (Composition) d)Driver (whole) : Car (Part) (Composition) e)Car is associated to Driver f)None of the given
Could you kindly clarify the exact definitions of the terms "universal description," "discovery," and "integration"? (UDDI)
In this section, we will learn the meanings of the following terms: association, class diagram, event, object, object class, operation, sequence diagram, state, state transition, unified modeling language, and use case.
Clear solution with steps, please.
Consider an E/R diagram which has information about students, courses, and enrollments, where Students = (Sid, Sname, address, SIN, Program) and Courses = (Cid, Cname, Credits) are the entity sets and Enrollments is a many-to-many re- lationship between them with grade as its own attribute. Give an equivalent E/R diagram (i.e., preserves the information content) in which enrollment is modeled as a weak entity set.
Consider two sets of entities A and B, each of which include the property X (among other names that are not important to this discussion) among other attributes. Is it possible to enhance the design if the two Xs are not connected?
Just what does it imply when we talk about weak entities? The key is... Please provide an example Just what does "various specialization" entail?Where do I fit into the ER diagram, if at all? Provide a case study and accompanying illustration.