n the attached diagram, which of the following statements are true?       primary key for section is course_id, sec_id, semester, year     primary key for section is equivalent to the primary key for course unioned with the discrimator     section is a weak entity set whose existence depends on course     the discrimator of section is sec_id, semester, year

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A: M:N relationship: Relationships helps to connect the  related information between the  tables. They…

Q: Please transform the following Entity-Relationship Schema (Diagram) into a Relational Schema. Please…

A: Here PNo and SSno are primary key.  The following are the entities : PROJECT, EMPLOYEE, ENGINEER The…

Q: 1. Complete the following table with the correspondent statements: stmple entity, weak entity,…

A: Given is a ER diagram. ER diagram consists of Entity, Relationship and attributes. Each entity has a…

Q: The following statements are correct for. 1. Certain attributes may apply to some but not all…

A: The following statements for Specialization/Generalization 1.Certain attributes may apply to some…

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: An entity in X is connected numerous entity in Y, however an entity in Y is associated to only one…

A: Here  one entity in one set is related to more than one entity in other set.

Q: Create a rule that specifies when an attribute from one entity type should be extracted and placed…

A: An entity-relationship model (or ER model) is used to explain the relationships between objects of…

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: Transform the following Entity Relationship Model into Relational Schema. TID DeptiD DName TName…

A: The relational model is nothing but a group of tables or relations that create for your database.…

Q: When an attribute should be extracted from one entity type and placed in a related entity type,…

A: The answer is given below:-

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A: New ERD in third normal form is an given below :

Q: The below Entity Relationship Diagram (ERD) is in second normal form. Draw a new ERD in third normal…

A: Below is the ER diagram in third normal form with explanation:

Q: is a piece of information used to describe an entity. a. Attribute b. Associative Entity Cardinality…

A: Answering 4 and 5.  According to the policies I can't solve multiple questions in one question…

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: Transform the following Entity Relationship Model into Relational Schema. DeptiD EmpiD DName Name…

A: The term "schema" refers to the organization of data as a blueprint of how the database is…

Q: It is requested to draw an entity relationship diagr Information about the subject are given below.…

A: ER Diagram represents Entity Relationship Diagram It shows the relationship of element sets put away…

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

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

Q: 1. Draw the ER diagram corresponding to following relational model with all constraints Employee…

A: ERD  :-

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

A: 1)Entity Relationship Diagram for the system:-

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

A: A relational database contains tables. Tables have data arranged in rows and columns like a grid. A…

Q: Define entity?

A: The answer is given below:

Q: n conducting the Design Phase, which of the following tasks must be conducted first?   a.…

A: b) Create an Entity Relationship Diagram :-…

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: relationship between entity supertype and entity subtype is known as  _______.     Partial…

A: A relationship between entity supertype and entity subtype is known as a Total participation…

Q: Create an entity named country and capital and create a one-to-one mapping using JPA. COUNTRY…

A: Create an entity country and capital and create a one-to-one mapping using JPA. Write a main program…

Q: What does it mean to be a weak entity? Set a good example.

A: Introduction: Although an entity type should contain a key attribute that uniquely identifies each…

Q: When must a many-to-many relationship bemodeled as an associative entity

A: Given: When must a many-to-many relationship be modeled as an associative entity.

Q: Create an entity relationship diagram and the relational diagram

A: ANSWER: Entity Relationship Diagram: An entity relationship diagram, otherwise called an entity…

Q: A relationship between entity supertype and entity subtype is known as  _______

A: The Answer:

Q: A relationship between entity supertype and entity subtype is known as  ___

A: Subtype: Sub grouping of the entities in an entity type. Supertype: Supertype is a generic entity…

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

A: To Do: To identify the relation.

Q: Q2/II draw the entity relationship for each of the following: 1-" a student studies one or many…

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Q: an Entity and Attribute? Write different types of Entities and Attributes, along with their specific

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Q: Use ER Assistant to draw your diagram.   Draw a self-referencing entity type for the Employee…

A: The diagram is shown below

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: Based on Entity Relationship Diagram (ERD) below; a) Write the correct business rules for all…

A: The question has given an entity-relationship diagram that shows the entities and their attributes…

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: The correct option is A. Parent-Child relationship between the tables that connect them.

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: A. Parent-Child relationship between the tables that connect them. When an entity has the primary…

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: Primary Key is a column which can uniquely identify every row of a table

Q: When an entity has the primary key of another entity as an attribute, this creates: A Parent-Child…

A: The answer with an explanation is given in step 2.

Q: A rental car company divides its cars into four categories: small, mid-size, full-size, and sport…

A: It is related to super-type/subtype  connection and whether it is necessary or not is explained…

Q: A rental car company divides its cars into four categories: small, mid-size, full-size, and sport…

A: A database is a logically ordered collection of structured data kept electronically in a computer…

Q: Based on the above relational schema you are required to draw the Entity Relationship Diagram (ERD).…

A: ER Diagram

Q: Create an enhanced entity-relationship with ERD below, complete with PARTICIPATION and DISJOINT…

A: Enhanced ER model: (EER) diagrams are advanced versions of ER diagram.It is used in designing…

Q: Exercise 3.17 Consider the ER diagram that you designed for the Prescriptions-R-X chain of…

A:

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: What is the definition of an Entity set?

A: Please find the detailed explanation in the following steps.

Q: QUESTION 4   For the following collection of entities, give the assumptions concerning the…

A: Given entities: ORDER (order#, ordDate, cust#, cName ) ORDER_PART ( order#, part#, quantity )  PART…

Q: Which of the following best describes a relationship in which each instance of data in one entity…

A: Explanation:   a. one-to-one - here each instance of data in one entity is described by one instance…

Q: 1. i).To represent one entity that is a specific type of another entity we use…..? a.Relationships…

A: 1. i). The right answer to this problem is option a. Relationships Explanation: - The relationship…