relationship between entities and attributes.

Q: Question: Draw a diagram showing the relationships for all the tables. The following tables need to…

A:

Q: 39 Refer to the following ER diagram to answer the question below: PK Student SSN Name Year GPA How…

A: Answer:-   The correct answers are: A) The CampusID attribute in the Registration relation is a…

Q: When using subtype associations, talk about the database table choices that are accessible. Decide…

A: A Contacts table in a business database can hold the names of their suppliers, e-mail addresses, and…

Q: In an ERD, entities do not have columns. Instead which of the following is used to describe the…

A: In the intricate world of data modeling, where the digital realm mirrors the complexities of the…

Q: Consider the following relational schema: Staff (staffNo, name, dept, skillCode) Skill (skillCode,…

A: The question is asking for SQL queries to extract specific information from a relational database.…

Q: Normalise the answer from Q.5.2 to third normal form (3NF), showing all steps with explanations. The…

A: Please check the step 2 for solution

Q: Explain why an index is only helpful if an attribute's values are sufficiently diverse.

A: Introduction Use of an index with a wide range of values A file index is a table or other data…

Q: First normal form (1NF) requires that the domain of an attribute may contain only. A) Key values B)…

A: First Normal Form also known as (1NF) is Said to be one of the normalization rules in relational…

Q: What are the implications of choosing a composite primary key versus a single attribute primary key?

A: When designing a database, the selection of a primary key is a critical decision that can impact…

Q: 1. Total participation is where each entity participates in at least one relationship in the…

A: 1- True, Each entity in the entity set is involved in at least one relationship in a relationship…

Q: relation's main key and its functional interactions amongst its characteristics are interconnected

A: Please find the answer below :

Q: Explain why an index is only helpful if an attribute's values cover a suitable range. This is the…

A: The above question is answered in step 2 :-

Q: How to Doing "Update-Database" within your code in Entity Framework.

A: The databases used by non-development environment applications frequently need to be updated. After…

Q: Consider the following relations: Employee(E_id: integer, E_name: string, Age: integer, Salary:…

A: Referential integrity constraints are rules that ensure that the references from one table to…

Q: It is the relation among individual entities and values. O principles patterns state relation

A: In  Step 2, I have provided   correct  option-----

Q: Leslie’s Auto Sales has a relational database with which it maintains data on its salespersons, its…

A: Introduction: An ER diagram (Entity-Relationship diagram) is a graphical representation of entities…

Q: Show the relationships between entities and use table bridges between entities if necessary.

A: The relationships between entities:

Q: Determine the average salary of the employees who do not live in Greensboro. Rename the average…

A: We have to Determine the average salary of the employees who do not live in Greensboro.Rename the…

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: What is a Derived Attribute and how does it work?

A: Derived Attribute: As the name implies, a derived attribute is one that can be computed or derived…

Q: Explain the relationship between the primary key of a relation and the functional dependencies that…

A: Introduction: A primary key is a database characteristic that uniquely identifies a record.

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: Explain the connection between a relation's primary key and the functional dependencies that exist…

A: A primary key is an attribute that identifies a record in a database. It is used to filter data…

Q: When an attribute is part of a composite primary key, it's also a candidate key.

A: A candidate key is a field or expression that satisfies the requirements for a primary key. It is a…

Q: When it comes to relationships, what is the connection between the main key of a relation and the…

A: The connection between the main key of a relation and the functional dependencies among all…

Q: Create an unnormalized relation using student and class entities.

A: Here, we have to create an unnormalized relation using student and class entities.

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: According to another non-key attribute, what is the connection between the primary key and a non-key…

A: The term "functional dependence" refers to the relationship between two features. A relationship,…

Q: A "candidate key" is: any set of fields that determines the values of all other fields functionally…

A: Let's break down the other options:"any set of fields that determines the values of all other…

Q: ERD and Keys A hotel has many rooms.  A guest can make a reservation for one room or multiple…

A: ERD is called the Entity-Relationship model. ERD diagrams are used to draw the relationships between…

Q: Explain the significance of cardinality in relationships between entities.

A: The concept of cardinality in Entity Relationship (ER) modeling refers to the aspect of…

Q: relationship between the entities(did not show the relationship) and the contraints

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

Q: QUESTION 5 A functional dependency is a relationship between or among : Attributes Rows Entities O…

A: Here in this question we have asked that a functional dependency is a relationship between or…

Q: Entity, relationship, and attribute names and definitions should all be correct.

A: An entity relationship diagram (ERD) also known as an entity relationship model is a graphical…

Q: Lab 3: Normalization Assignment: Problem #11 from Chapter #6. (Be sure to note that this is PROBLEM…

A: The relation schema for the table structure is given below, CHARTER (CHAR_TRIP, CHAR_DATE,…

Q: C1. "Nomadic Desert Camp, Oman" requires an Information System to maintain the details of the…

A: The given scenario is related to an  amusement booking system for which an ER diagram has been…

Q: Normalise the following relation to remove modification anomalies showing all steps for 1NF, 2NF and…

A:

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: A ternary relationship is a relationship which includes Select one: O a. Two entities O b. Three…

A: In unary relationship, only one type of entity participate in that relationship.   In binary…