Šelect one: O a. ERD incorrect O b. Airport has no key O . There is no attributes in FlightNum O d. The relationship Arrives involves an attribute FlightNum instead of an entity

Q: When moving a weak entity from the ER model to relational schema, describe what makes up the primary…

A: Weak entity means entities that doesn't have their own primary key and is completely dependent on…

Q: Describe the difference between simple attributes and composite attributes. Justify the need for…

A: INTRODUCTION: Here we need to tell the difference between simple attributes and composite attributes…

Q: Fill in the blank:  A ____________________ is a structured collection of related data stored on a…

A: Database: Database, any collection of data or information, that is specially organized for rapid…

Q: Discuss the concept that an attribute that is part of a composite primary key is also a candidate…

A: A candidate key is a single field or a composite expression that meets the requirements of a primary…

Q: A weak entity set depends on another entity set for all or part of its key. Select one: O a. False…

A: Since weak entity dont have its own primary key, it depends on another entity, and weak entity have…

Q: Q1. ER Model . Create an ER Model for the following: A customer (eg. Tom) may (or may not) give…

A:

Q: Airport Flight Arrive Num State ABC Select one: O a. ERD incorrect O b. The relationship Arrives…

A: The ER(Entity Relation) diagram is used to represent the relationship between the different entity…

Q: Relationship Type? (M:1, 1:1 etc) and Relationship trength? .What are the Cardinalities in the…

A: Q)1)Relationship Type: One-to-One Relationship One-to-Many or Many-to-One Relationship Many-to-Many…

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

A: The answer is given below:-

Q: Give an illustration of what a Key Attribute is.

A: An key attribute that is part of a key or is the whole key.

Q: Multiplicity is the same as what concept for an ERD? a. Relationship b. Attribute c. Entity d.…

A: multiplicity constraint represents for a relationship type. It represents the number (or range) of…

Q: Suppose an attribute that is part of a main key is also a candidate key. How would you respond to…

A: Required:  What response should you provide if someone suggests that an attribute which is a…

Q: Q.No.1Analyze the given entity relationship diagram and answer the following questions. P ld Name…

A: Given question has asked to analyze the entity relationship diagram and answer the following…

Q: Q.Modify the ER diagram given below and add these make corrections if anything is wrong Weak entity…

A: In the given ER diagram The Attribute with underline is the key attribute that is the primary key…

Q: 1. Mapping a relationship that has a total participation, implies that the foreign key should be: a.…

A: SQL (Structured Query Language) is a standard programming language that used to manage relational…

Q: 1. Which of the following represents an iterative process of systems development in which…

A: As per guidelines we are suppose to answer 1st question  Prototyping is an exploratory cycle where…

Q: Create a rule to extract attributes from one entity type and set them in another.

A: GIVEN: Create a rule to extract attributes from one entity type and set them in another.

Q: The descriptive property possessed by each entity set is a(n): A Attribute. Instance. C Relation. D…

A: Answer A) Attribute

Q: Provide examples of how relationships are represented using attributes and the general term for an…

A: Introduction: Attributes are specifications that describe the properties of an object, element, or…

Q: Translate the following ER Diagram into relational model. Show different relations that will result…

A: Relational Model is used for modelling data in the form of relations or tables. It represents how…

Q: 1. Write the names of the parts indicated by the arrows in the figure below: Book (book number -…

A: The above given question contains four sub questions based on the relational data base where each…

Q: How many properties will an equivalent relationship satisfy? a) 1 b) 2 c) 3 d) 4

A: 3 properties will an equivalent relationship satisfy.

Q: Whenever patients are seen for the first time, they complete a patient information form that asks…

A: The solution for the above given question is given below:

Q: What is a relation, exactly? Determine the traits that make up a relationship.

A: A relation is a table with two parts. It shows how many rows (called "tuples") and columns there are…

Q: 46. ______________ express the number of entities to which another entity can be associated via a…

A: Here is the solution which is mentioned below:

Q: Draw an ER diagram for online shopping Database that captures given below requirements. Specify key…

A: ER diagram has been attached below.

Q: Q2- What is a composite entity, and when is it used?

A: Entity – Entities are actual world items that structure the essential locks around which the entire…

Q: 8 Which of the following relationships models the following statement: "My friends have nice cars" *…

A: To Do: To identify the relation.

Q: Many to many relationships (a non spcific relationship) are resolved into a pair of one-to-many…

A: Many to many relationships (a non spcific relationship) are resolved into a pair of one-to-many…

Q: Draw the shape used in the object-based logical model of the following. a. Attributes b. Entity sets…

A: a. An attribute defines the characteristic/property of an attribute The shape of the attribute in…

Q: Which of the following statements corresponds to the second normal form for an entity - relationship…

A: A relationship must have a key,with simphleks domains for its attributes and all non-key attributes…

Q: Review the data model provided in the case study. (1) List all entities and its type

A: Below i have answered:

Q: • Each waiter has a date when they started serving. • Each waiter is also assigned many reservations…

A: The given problem is related to designing the database where the system description is provided. The…

Q: Describes a relationship in which each instance of data in one entity is represented by only one…

A: The following are the three types of relationships that exist between entities: One-One…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is true about grade?…

A: “grade” represents an entity associated with the relationship “takes” in the given…

Q: You must analyze the entities identified including the bridges: • Entity name • Entity description…

A: entity name:class level description:the class level entity acts as a base class for the classes…

Q: Which of the following relationships models .15 the following statement: "The book contains * "300…

A: The relationship models the given statement the book contains 300 pages

Q: Which of the following types of relationships can have attributes associated with them: one-to-one,…

A: Attributes of Relationship Types The relationship types that generally have attributes associated…

Q: 13. Refer to the following ERD, the foreign key is placed in these entities: [select all that apply)…

A: To find the solution from the given ERD

Q: • Apply the appropriate data types to each attribute in all entities • Show relationships between…

A: the EER diagram is an below :

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: 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: Consider the following relational schema, representing five relations describing shopping…

A: The relational schema defines the relation between entities and attributes. The entities in a…

Q: Question 3 Discuss in detailed explanation that the concept that an attribute that is part of a…

A: The concept that an attribute that is part of a composite primary key is also a candidatekey:

Q: An entity student has a derived attribute "age". When mapping ER Diagram to schema, you place…

A: We have an entity 'student' has a derived attribute "age". When mapping ER Diagram to schema, where…

Q: Draw the relationships,identify the business rules,depicted in the Crow's foot ERD shown in the…

A: In a particular subject of knowledge, an entity-relationship model (or ER model) represents…

Q: 1

A: Different business rules are given in the question which form the entities like Volunteer, Area,…

Types of Security Models

The security models are specifically defining the relationship of operating system performance with the information security models. The effective and efficient security models secure the sensitive and relevant information or data of the organizations. The security policy is verified by using the information security models. They deliver a precise set of directions to the computer to follow the implementation of vital security processes, procedures, and concepts contained in a security program. They define the security concern in information threads.