Differentiate among following: [at least 4 differences] 1. include and extended relation in use case diagram 2. Class and Object diagram

Q: When is it important to use an associative entity to express a many-to-many relationship?

A: Associative Entity is used when relationship is to be established in a relation. Like Student and…

Q: Code for Mapping relationship with Entity Framework Code First: One-to-one and variations

A: Code to map one-to-one type relationships using Entity Framework.

Q: Question 6 In order to make it easier to compare the relation scheme diagram to the UML diagram, we…

A: In order to make it easier to compare the relation scheme diagram to the UML diagram, we (check all…

Q: What is Ternary Relationship?

A: Given: What is Ternary Relationship?

Q: design an Enhanced Entity Relationship (EER) diagram Topic: Locomotives The ERR diagram should…

A: entities of system : PaperBook, ElectronicBook, Users, borrowing_transactions Attributes of…

Q: What is a strong entity type?

A: Introduction: A strong entity is self-contained and independent of other entity types. It has a…

Q: Give some special guidelines for naming entity types

A: Guidelines for Entity Types: The entity name should be singular. It should be very specific and…

Q: TRUE or FALSE - Generalization (is-a) is the relationship established between entities to show that…

A: Answer: the given statement is false

Q: Entity-Relationship Diagram (ERD) is one of the data modeling tools that provides a software…

A:

Q: What is the difference between a weak and a strong group of entities?

A: A weak group of entities typically has limited influence,power,cohesion,and resources,while a strong…

Q: A_ _is a property of the entire relation, rather than of the individual tuples in which each tuple…

A: 1) A key in DBMS is an attribute or a set of attributes that help to uniquely identify a tuple (or…

Q: With examples, explain the distinctions between is-a relationship and has-a relationship.

A: There are two ways to reuse codes in object-oriented programming either by the implementation of an…

Q: Library Management system: This system allows the students to search books,request books etc.…

A: Below I have provided the solution of all the case study of the given application.

Q: Library Management system: This system allows the students to search books, request books etc.…

A: Use Case Diagrams: referred as a Behavior model or diagram. It simply describes and displays the…

Q: What is the function of a subtype discriminator?

A: The Answer is in step-2.

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

A: The answer :

Q: When do you need to use an associative entity to depict a many-to-many relationship?

A: Modeling of associative entities An Associated Entity is a relationship that has been transformed…

Q: Explain the difference between an entity class and an entity instance.

A: Entity: Entity may be a thought to abstractly represent all instances of a bunch of comparable…

Q: Expaination

A: A sequence diagram shows interaction with objects in tone sequence.

Q: Create a student registration class diagram for all requirement that contains at least 15 class,…

A:

Q: Suppose you are going to design an instant messaging application called Telegraph. Telegraph is…

A: It is defined as a collection of information that is organized so that it can be easily accessed,…

Q: Subtype discriminators se

A: Answer: A subtype discriminator is an attribute which is according to the name suggests it is whom…

Q: What is the recursive entity?

A:

Q: Question 2: The UML display the mediator pattern, describe uml and the relations, build the code in…

A: In this uml diagram inheritance occur. Below i write simple Java code: explanation: In given uml…

Q: 27. Include Relation in Use Case Diagram is a Non Mandatory Relationship Mandatory Relationship…

A: the answer is given below:-

Q: What are the two options for a designer when confronted with a multivalued attribute?

A: Multivalued attributes An ER model or Entity Relationship model is a data representation model that…

Q: In a descriptive model, what are the primary elements that make up the structure?

A: We'll go through the essentials of a descriptive model: DESCRIPTION FORMULA TYPE: Describing a group…

Q: 3) A relation is said to be in 3NF if it is in 2NF and no nonprime attribute of R is blank the…

A: Normal form (NF) in databases are the rules that define the structure of relations databases.With…

Q: Why are data structures essential and what are they? What categories do they fall under? Can you…

A: Introduction: The term "Data structures" refers to collections of different sorts of data. There are…