Explain how functional dependencies can be used to indicate the following:• A one-to-one relationship set exists between entity sets student and instructor.• Amany-to-one relationship set exists between entity sets student and instructor.

Q: Consider the following relation with set of functional dependencies R(ABCDEF) ABC->D, ABD->E, CD->F,…

A: In this question, we are given a relation with set of functional dependenciesR(ABCDEF)ABC->D,…

Q: Discuss the classification of traceability relations elicit brief an example that defines the…

A: traceability relations :- the degree to which a relationship can be established between two or more…

Q: Suppose the advisor relationship set were one-to-one. What extra constraints are required on the…

A: GIVEN: Suppose the advisor relationship set was one-to-one. What extra constraints are required on…

Q: Where you can apply all the normalization rules to attributes. Furthermore, you also need to explain…

A: Normalization Rules Normalization rules for entity-relationship diagrams are based on (and are…

Q: Differentiate between weak entity set and strong entity set

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: Consider the generalization and specialization lattice structure below (attributes not shown).…

A: Given: Consider the generalization and specialization lattice structure below (attributes not…

Q: (7) Consider the following relation for published books: BOOK (Book_title, Author_name, Book_type,…

A: Here key for the given relation is {BookTitle, Author Name} The FD  BookTitle -> Publisher,…

Q: Explain how weak entity representation differs from strong entity representation.

A: Entity: The entity is a representation of an object, table, or thing in a database management…

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: Ov

A: The degree of has relationship is two.

Q: What is the definition of an Entity set?

A: Answer An entity set is a logical container for instances of an entity type and instances of any…

Q: QUESTION 2 in ERD, an Entity with a partial key is named: O Partial Entity O Srong Entity O Weak…

A: Strong Entity is an entity which is not dependent on other entity and have a primary key. Its…

Q: a. Draw ER- notation for the given elements of ER-Model. 1. Entities a. Strong Entity b. Weak Entity…

A: Strong Entity: Weak Entity: Associate Entry:

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: What exactly is included in the Weak Entity set?

A: A weak entity is one that can only exist when owned by another one.

Q: How is a relationship between entities indicated in an ERD? Give an example using the Crow’s Foot…

A: Relationship Representation in ERD(Entity Relationship Diagram):-   ER diagram or Entity…

Q: Consider the relation schema R (A, B, C, D) with all possible functional dependencies. For each of…

A: 1. A, C -> B, D C -> D Here the key for the relation is (AC)  The FD C->D is a partial…

Q: For each of the following pairs of related entities, indicate whether (under typical circumstances)…

A: Given: To draw a diagram for each of the relationships.a. STUDENT and COURSE (students register for…

Q: Design an Entity-Relationship for each system described below. Use the (min,max) notation. State…

A: An entity is the relationship model which describes the interrelated things in a domain. A basic ER…

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

A: Identifying the functional dependencies: The relationship sets can be indicated using the functional…

Q: Consider the unnormalized relation R with six attributes ABCDEF and the following functional…

A: Objective: A relation R is given with 6 attributes ABCDEF along with functional dependencies as: AB…

Q: Consider a relation X with six attributes WYSMFE where WS is a composite primary key for X. Assume X…

A: The handwritten solution is provided below:-

Q: Explain the usage of attributes and the generic name for attribute in the relationship mode

A: I have provided answer in step2

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: A weak entity set can always be made into a strong entity set by adding to its attributes the…

A: To convert a weak entity set to a string set, simply add the primary key attributes from its…

Q: It is possible to can convert any weak entity set to a strong entity set by simply adding…

A: To avoid the inconsistencies caused by duplicating the key of the strong entity. Though a weak…

Q: Please TYPE IF POSSIBLE OR WRITE CLEARLY Consider a relation X with six attributes WYSMFE where WS…

A: 1. Primary key for the given relation is (W, S)  The FDs S -> YME This is partial functional…

Q: In what normal form is relation T? Explain why?   Is it possible to decompose T into a number of…

A: The provided answer is

Q: Consider the following E/R diagram with isa relationships, in which every node represents an entity…

A:

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: Choose the resultant relation(s) after transforming the below ERD. A2 A1 A3 ENTITY A Rel O A.…

A: A relationship between two entities of a similar entity type is called a recursive relationship.…

Q: Give Some additional examples of strong and weak entity pairs?

A: Strong entity: It can exist without any other entity Example:Patient(Patientid, name, surname)

Q: Why is it recommended that every ternary relationship be converted into an associative entity?

A: GIVEN: Why is it recommended that every ternary relationship be converted into an associative…

Q: Consider a relation such as sec course, generated from a many-to-one relationship set sec course. Do…

A: Let suppose a relation generated from a many-to-one relationship having primary and foreign key…

Q: State a rule that says when to extract an attribute from one entity type and place it in a linked…

A: Let’s first understand what is entity type and attributes: Entity Type: A group of different…

Q: List all nontrivial functional dependencies satisfied by the relation of Figure 7.18.

A: NON-TRIVIAL FUNCTIONAL DEPENDENCIES: Functional dependency refers the concept in which one…

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: a) Consider the given schema. Instructor(id, name, dept, address, age, phn_number) Student(s id,…

A: here we have given the hand written images of mapping cardinalities and normalized data upto 3nf

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

A:

Q: Computer Science Design an Extended Entity Relationship Model with appropriate cardinality and…

A: Entities are the real world object which represents the data while relationship defines the relation…

Q: Consider a Mail_Order database in which employees take orders for parts from customers. The data…

A: The following is a ER- diagram for a mail-order system with various parameter. An ER diagram is an…

Q: Specifically, on which side of a many-to-one connection does the primary key of one entity function…

A: Given: Specifically, on which side of a many-to-one connection does the primary key of one entity…

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,…

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.