Model each of the following constructs inanE-R diagram: composite attribute,multivalued attribute, derived attribute, associative entity, identifying relationship,and minimum and maximum cardinality constraints.

Q: Answer the following questions: 7. Provide the attribute closure of set of attributes C (hence, C+)…

A: As per our guidelines, we are supposed to answer only one question. Kindly repost the remaining…

Q: Translate the E/R diagram that you draw in the previous question into a set of relations, clearly…

A: Given Figure :-

Q: Consider an E-R diagram in which the same entity set appears several times, with its attributes…

A: Through the use of a collection of individuals we also ignore relationships The pattern. The E-R…

Q: Create an Entity-Relationship Model to represent the data requirements of the problem given below.…

A: ERD for the given requirement: No of Entities: Person entity Employee Alumnus Student Staff Faculty…

Q: A weak entity set may always be turned into a strong entity set by adding the primary-key attributes…

A: A weak entity set may permanently be transformed into a strong entity set by including the main…

Q: A weak entity set may be turned to a strong entity set by adding the primary-key attributes of its…

A: Introduction: Adding the major key features of an identifying entity set to the attributes of an…

Q: An attribute that may take on more than one value for each entity instance in ERD is referred to as…

A: Answer :- option D) multivalued attribute

Q: Consider the below ERD in Figure 03 of Student Enrolment system and answer the below questions.…

A: List the strong (non-weak) entity types in the ER diagram. Student Enrollment Lecturer Subjects…

Q: nvert the following ERD in Chen's notation to an ERD in IE notation. All entities, attributes, and…

A: The answer for the given question is as follows

Q: Distinguish between the ways in which functional dependencies may be utilized to express the…

A: Identifying the functional dependencies entails the following steps: The functional dependencies may…

Q: You are to clearly: -- identify entity sets, relationship sets, all attributes, and primary keys;…

A: About the case   study:

Q: Give an example of how attributes are used in a relationship model, and what the generic term for an…

A: Entities in the ER model contain characteristics that may be single-valued, multi-valued, composite,…

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

A: Answer A) Attribute

Q: A person can be an employee, alumnus, or a student. For a person, P_id (identifier), date of birth,…

A: ERD for the given requirement: No of Entities: Person entity Employee Alumnus Student Staff Faculty…

Q: We can convert any weak entity set to a strong entity set by simply adding appropriate attributes.…

A: Explanation: Weak entity set avoids the data duplication and consequent possible inconsistencies…

Q: What is the attribute that could be obtained using other attributes in the Entity-Relationship…

A: Introduction: What is the attribute that could be obtained using other attributes in the…

Q: Create an Entity-Relationship Model to represent the data requirements of the problem given below.…

A: ERD for the given requirement: No of Entities: Person entity Employee Alumnus Student Staff Faculty…

Q: By simply adding relevant properties, we may turn any weak entity set into a strong entity set. So…

A: Answer: We must first understand what a weak entity set is. Insufficient entity set definition:…

Q: The cardinality ratio depends on the real-world meaning of the entity types involved and is defined…

A: 1. Each student can have only one social security number and a social security number can belong to…

Q: Draw an ER diagram for the airport database. Be sure to indicate the various attributes of each…

A: ER : ER Diagram stands for Entity Relationship Diagram, also known as ERD is a diagram that displays…

Q: Choose correct answers for each of the following: Consider the relationship R between two entity…

A: As per our company guidelines we are supposed to answer only first 3 sub parts. Kindly repost other…

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

A: The functional dependency is a relationship that exists between two attributes. It typically exists…

Q: can be converted to a strong entity set by simply adding the appropriate attributes. Why,

A: For the following reasons, a weak entity set is required:

Q: In an entity-relationship model, which of the following is a kind of attribute that should have some…

A: Required attribute is an attribute that must have a value in it. hence, it can not be left empty.

Q: Consider an E-R diagram containing 2 strong entities A and B. The cardinality ratio between the two…

A: Minimum number of tables required are 4

Q: Construct Entity Relationship Diagram (ERD) for the scenario given. Include all the actual and…

A: Given: Construct Entity Relationship Diagram (ERD) for the scenario given. Include all the actual…

Q: Create ERDs for the following cases. • Identify entities, identifier and attributes for each entity,…

A: Solution: Entity and its attributes: Course     CourseID     CourseName Section     SectionID…

Q: Construct Entity Relationship Diagram (ERD) for the scenario given. Include all the actual and…

A: ER diagram in crow's foot notation has been designed based on the given requirements and its…

Q: Illustrate an Entity-Relationship Diagram (ERD) model using Crow’s Foot notation  Here we can have…

A:

Q: Part 3: Denormalization – Pick one of the three common relationship types that often give an…

A: DENORMALIZATION: denormalization, the opposite of normalization to increase the performance…

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

A: Please find below the relational model for the ER diagram mentioned above: Newspaper (newsPaperID…

Q: 3 Create an Entity-Relationship Model to represent the data requirements of the problem given below.…

A:

Q: When mapping generalisations and specialisations in enhanced entity relationship diagrams, which…

A: Enhanced entity relationship diagram is a graphical portrayal that portrays connections among…

Q: am to simple text that anyone understand it without entities , attributes or relationshops word.

A: The above ERD shows the personal vehicle features and activities if we are having a personal for…

Q: Create ERDs for the following cases. • Identify entities, identifier and attributes for each entity,…

A: Solution:   Entity and its attribute: Course     CourseID     CourseName   Section     SectionID…

Q: relationship between entities and attributes.

A: EMPLOYEE(EMP_NUM, EMP_LNAME, EMP_INITIAL, EMP-DOB) Here, primary key = EMP_NUM DEPENDENT(EMP_NUM,…

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: The descriptive property possessed by cach entity set is atn): A Attribute. B Instance. C Relation.…

A: The descriptive property possessed by each entity set is a(n), Then correct option is A. A.…

Q: In an E-R diagram, there are two entity sets, students and courses, and one relationship set, take.…

A: E R Diagram

Q: Use ER Assistant to draw your diagram.  Transform the following M-N relationship into an associative…

A: ERD: ERD stands for Entity Relationship Diagram. This is a diagram which is used to show the…

Q: b) Identify an attribute in the ER diagram that could represent a derived attribute and explain…

A: Derived attribute is an attribute which can be derived from other attributes.

Q: draw an E-R diagram that indicates the entity sets and their attributes. Identify and label…

A: An ER diagram is an entity relationship diagram, also known as an ERD, which displays the…

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.