Suppose you are given a data set that classifies each sample unit into one of four categories: A, B, C, or D. You plan to create a computer database consisting of these data, and you decide to code the data as A = 1, B = 2, C = 3, and D = 4. Are the data consisting of the classifications A, B, C, and D qualitative or quantitative?  After the data are input as 1, 2, 3, or 4, are they qualitative or quantitative?

Q: Which ones are super keys for course? (a) course id (b) course id, title (c) course id, title,…

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A: According to the information given:- We have to follow the instruction to create ER diagram.

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A: Summary:In this question, we need a create a conceptual data model with optionalities and…

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A: Entities: ----------------------------------- Album : Attributes: Title, Copyright date Format,…

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A: ER Diagram is abbreviated as Entity Relationship Diagram. It is also shortened into ERD. This…

Q: An airline company is interested in implementing a database system to manipulate the flights that it…

A: ERD: Unique id: Airline_id, Model_id, Flight_number, Airport_id, date, seat_no Dept_time: Departure…

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

A: In Mail Order Database, Entities: Employee, Customer, Order, and Parts. Using rectangles to…

Q: Exercise The Prescriptions-B-A chain of pharmacies has offered to give you a free lifetime supply of…

A: By the given information provided: - We must follow the instructions to come up with an ER diagram.…

Q: Data Abstraction is defined as Select one: O a. Describing database with a certain level of data…

A: Data Abstraction refers to hiding some amount of data not to be directly visible to user

Q: Mapping this class diagram to a relational database during the design phase of the Software…

A: Relational database is the table representation of the database. In Relational database, each entity…

Q: A physical database can only be designed with certain inputs.A physical database can only be…

A: Physical database: A physical database is both the actual hardware holding the data files and the…

Q: Imagine a database that stores records of what students are enrolled in what class, and what…

A: Find the answer given as below :

Q: 4) The mismatch between the data structures stored in the database and the organization of…

A: Impedance mismatch is a term used to refer to problems that occur due to differences between the…

Q: Operational data base are present at the backend of all our information systems. What good can a…

A: Operational database  The operational database is defined as the online transaction processing…

Q: Suppose you are involved in developing a database system for the ticket booking database of ABC bus…

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

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

A: Entity-Relationship disgram:

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A: Introduction :We have to draw an ER-Diagram of the given database.

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A: Since we can answer only up to one question and three subparts. So we'll answer the first three…

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Q: the following ER diagram into a relational database schema. dID CID Director Cinema fullIName…

A: The Answer is

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Q: how could you construct your database and tables? Design your database and draw a database schema…

A: First step is to built the database schema using the following query- CREATE SCHEMA `organization`…

Q: In the case of a physical database, where do you begin?

A: Physical database design represents the materialization of a database into an actual system. While…

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A: ER Diagram: ER diagram consists of entities with their corresponding attributes and relationships…

Q: b) Consider a simple relational database of Hospital Management System. (Underlined attributes…

A: 1. SELECT PatientID   FROM Patients As P , Hospital As H        WHERE P. PatientID  =H.PatientID…

Q: Are there any fundamental decisions to be made when it comes to physical database design?

A: Among the most important choices that need to be taken are the following: picking the suitable…

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A: Given. DRAWING ER DIAGRAM AND RELATIONAL SCHEMA

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A: total participation is shown between orders relation and order entity  partial participation is…

Q: 5) Consider a database used to record of persons and each person has name, E-mail, one numbers, and…

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Q: NOSQL is a new generation of databases that address specific challenges in the Big Data era. Suppose…

A: Answer NoSQL Schema in JSON {  { "STAFF_ID": 123, "DOB":1993/05/19, "DEGREE1":"Bsc", "DEGREE2":"",…

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A: The following images shows the answer..

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Q: 8. What is a Database? A. A Data mining program B. A Customer Table C. A collection of related…

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Q: Make a Database Security (Inference Detection Algorithm) make a database containing personnel…

A: Given: Make a Database Security (Inference Detection Algorithm) make a database containing…

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

A: An entity relationship diagram (ERD) shows the relationships of entity sets stored in a database. An…

Q: A sales system is built using Java. The database used is MySQL with the DB name 'Sales' and has a…

A: As you have posted multiple questions, we will solve the first question for you. The database and…

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Q: Draw a relational database model of exam department in university?

A:

Q: A database has been designed to display a list of popular movies and also a list of actors acting in…

A: A relational database is a software that stores data in form of tables.  It is not a good Idea to…

Q: Draw an E-R diagram for the description below.  Suppose that you are asked to model a database…

A: According to the given description the E-R diagram and its explanation is given below: -…

Q: a. Given the table structure illustrated in Table P6.7, write the relational schema and draw its…

A: a. The relational schema of the given table consists of only a single table as shown. RELATIONAL…

Q: Suppose you are given the following requirement for a simple database for the employee management…

A: Consider the ER diagram for the company database. The employee may work in up to two departments or…

Q: Your Division Head's point of view is as follows: "Pictures are stored in a database, and the basic…

A: The solution is as follows: DEFINITION To safeguard all photos from harmful acts, that approach must…

Theoretical Computer Science

Usually, computer science seems like a practical field that involves studying, building, and working closely with computers. However, a subclass of this discipline also centers on the mathematical factors of the same. This is called theoretical computer science, and its focal point differentiates it from other branches of computer science: the rigorous mathematical approach it takes. This discipline falls under the umbrella of discrete mathematics, which is the study of countable or discontinuous mathematical structures.