3) A relation is said to be in 3NF if it is in 2NF and no nonprime attribute of R is blank the primary key. A) an alternate for B) transitively dependent on C) Part of  D) partially functionally dependent on E) fully funcionally dependent on

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: A relation R on a set S, defined as x R y if and only if y R x. This is an example of? a) reflexive…

A:

Q: Describe the concept of functional dependency.

A: Step 1:- A functional dependency is related to the DBMS.DBMS stands for Database Management…

Q: Analyze the following relation, a) write the types of functional dependencies; c) perform the…

A: For the above table, keys are not defined. Keys can be identified using real time conditions. For…

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

A: Answer: the given statement is false

Q: Give examples of relations that are: (a) reflexive and symmetric but not transitive (b) reflexive…

A: (a) Reflexive and symmetric but not transitive:   Let's consider a set A = {1, 2, 3}, and define a…

Q: Random Hospital Example ERD Problem Follow the Simple Procedure for ERD diagramming to design an…

A: ans given below

Q: The decomposition of one relation say R into two relations is classified as a. functional…

A: c) binary decomposition

Q: Write a relation from a given digraph. b) Determine properties. c) Write in a matrix form.

A: Consider the given digraph:

Q: 2 Consider the following functional dependencies for the given relation. R={A, B, C, D, E, F) AB->CD…

A: Dear Student, The answer to your question is given below -

Q: The type of algorithm in which decomposition of relation schema is constructed from other specific…

A: Certain algorithms are used to create relational decomposition from a set of relationships in…

Q: Computer science What is the relationship between the primary key of a relation and the…

A: The Answer is in step2

Q: What's the difference between weak and strong entity sets?

A: What's the difference between weak and strong entity sets?

Q: Diagram into a col y of the constraints as possible. ote: Courses is a weak entity set, and Number…

A: the relational schema is given below

Q: Assume a relation schema R(a, b, c, d, e, f) with primary key (a, b) and the following full func-…

A: Functional Dependencies:- Functional dependencies are the result of the interrelationship between…

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: Normalization: elational schema and FR corresponding set of functio R = ABCDE FR = {AC, BD, C → A}

A: Tables are arranged using the normalization method in the database architecture to reduce data…

Q: The following are the objectives for the design of the logical schema:

A: Intro According to the question, a Logical schema is developed using diagrams that define the…

Q: Talk about what weak and strong entity sets are.

A: Entity sets are used to model real-world objects or concepts within an organization's domain. There…

Q: If aRb ånd bRc together imply cRa. Which of the following options is/are correct? (a) If a relation…

A: The answer is

Q: First normal form a) prohibits multi-valued attributes b) prohibits composite attributes c) is…

A: In the context of relational databases, A normal form is a set of rules that a database schema must…

Q: Suppose you have a Relation that has an atomic Primary Key and noRepeating Groups. All non-key…

A: According to the details provided about the relation, the relation is in 2NF. This relation has to…

Q: The conclusion of the template is a condition which must be held on tuples hypothesis in the…

A: Template dependencies offer a broader range of data dependencies than earlier dependencies could…

Q: 32 of 40 Suppose attribute A is a key in the relation R. Which of the following statements is not…

A: Attribute A is a key in given relation R. And we have to check, which statement is not correct in…

Q: The disjoint rule specifies that if an entity instance of the supertype is a member of one subtype,…

A: The question is to find the given statement is true or false.

Q: d) Both a and b . Suitable level of partitioning is found within the range of a) Tuple and attribute…

A: Actually, partitioning is splitting the database table into many tables.

Q: lation R on a set S, defined as x R y if and only if y R x. This is an example of? a) reflexive…

A: Introduction: A relation R on a set S, defined as x R y if and only if y R x. This is an example…

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A: Answer: Given  EMPLOYEE (EMP_ID, EMP_NAME, DEPT, GRADE, SALARY, AGE, ADDRESS). Functional dependency…

Q: Multivalued dependencies are avoided in relation schema when the relation schema conforms to – (a)…

A: Answer: Multivalued dependencies are avoided in relation schema when the relation conforms to 4NF.…

Q: CUSTOMER (CID, NAME, STREET, CITY, STATE, AGE) SALE (PID, CID, DATE, COST) PART (PID, PNAME, COLOR)…

A: Below are the SQL statements for the retrieval and update operations

Q: What is the connection between the primary key of a relation and the functional relationships that…

A: Introduction Functional dependency: A connection between two qualities is termed functional…

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A: An entity is analogous to a single item and a collection of associated properties. When it comes to…

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A: Question one: Reflexive relations: A relation is reflexive if (a, a) ∈ R for all a ∈ A.Reflexive…

Q: A relation contains the points {(-10,5), (-5,1), (0,-3)}. What is the range of the relation? A…

A: Here in this question we have given three realtion and we have asked to find the range and domain of…

Q: Assignment: Which of the following links are equivalent/inequivalent? Where links are inequivalent,…

A: Which of the following links are equivalent/inequivalent ? what links are inequivalent .what is the…

Q: Q1: All the following statements about weak and strong entity sets are True, Except: Select one:…

A: Note:- As per our guidelines, we are allowed to answer the first question of multiple question.…

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.