Discussion Unit4

Database Design Before an Essential Oil product is marketed, testing is carried out based on the production batch from any essential oil. This is done to maintain the quality and content of the existing constituents in essential oils. Where the Test Percentage Content must reach the Minimum standard Percentage Content for each constituent. If there is one type of constituent that does not fulfill minimum standard, the batch will not be marketed because it does not meet the standard quality. 1. If recording the results of each testing process is still done manually,according to you please explain which approach fits between Centralized and View Integration for gathering requirements. 2. What Fact Finding Methods you will choose to getinformation related to the development of a database system to record the testing process, and explain the reasons for choosing. 3. Create 1-NF, 2-NF, 3-NF Normalization for the available forms. 4. Make an ERD (Entitiy Relationship Diagram) based on the…

Retrieval Queries Consider the following database (Figure 1) that describes a ride sharing scenario. Each ride has a unique ID and is offered by a driver. It has two locations: from and to. We track start and end time in addition to the price of the ride. Multiple passengers might share one ride. The information about which passengers travelled on each ride is tracked in the RIDE PASSENGER table. Cars are identified by their license plates and are associated with their drivers. Cars can be of different types, e.g., ‘compact’, ‘standard’, ‘premium’, ‘van’, etc. Hint: Sample data is shown in Figure 2.   A. Create an SQL statement to serve the described information needs (i) Retrieve the name and revenue of the driver with the highest revenue.  (ii) Retrieve the total price of all journeys for each category of cars according to the number of seats of the cars (not type). (iii) Retrieve fully-utilized rides, i.e., the number of passengers is the same as the number of seats.

ALO (Anderson - left - overs.) Enterprises is an organization that provides a wide variety of service offerings for clients. Service types available include bookkeeping, computer installation, computer repair, software installation, taxes, advertising, market surveys, etc. Each service engagement may involve multiple types of service and may include multiple employees. Each type of service has a standard hourly billing rate and can not be entered into the database unless at least one of ALQ's employees is capable of performing that type of service. Employees are trained to perform multiple types of services and can work on multiple service engagements. Employees earn a contracted annual salary based on their credentials, regardless of what services they actually end up performing. Clients are required to pay for a given service engagement in full ( with just one check) within two weeks of the completion date. It is possible for a client to pay for more than one service engagement with…

OWN WORK. COMPLETE DIAGRAM FOR UPVOTE

Relational Model (Logical and Physical Schema Development) The conceptual model developed in phase 2 will be transformed into a logical and physical schema using the relational data model. The outcome of this transformation will be a relational schema. The schema should have the following components: Set of required relations All the integrity constraints Submission and Evaluation: A report consisting of the problem statement, ER diagram, relational schema And implement the database using SQL should include: All the tables properly defined /created All constraints properly defined For each table, few instances of data should be entered. Producer Pharmacy medicines The pharmacy contains employees, certain medicines customers and patients Date Name Customers age pharmacy sex employees Commercial Record Address Location Salary Name

Database Design Before an Essential Oil product is marketed, testing is carried out based on the production batch from any essential oil. This is done to maintain the quality and content of the existing constituents in essential oils. Where the Test Percentage Content must reach the Minimum standard Percentage Content for each constituent. If there is one type of constituent that does not fulfill minimum standard, the batch will not be marketed because it does not meet the standard quality. Question 1. Create 1-NF, 2-NF, 3-NF Normalization for the available forms. 2. Make an ERD (Entitiy Relationship Diagram) based on the results of Normalization 3-NF. 3. Develop the ERD that you create to implement Generalization / Specialization.

Database Design Before an Essential Oil product is marketed, testing is carried out based on the production batch from any essential oil. This is done to maintain the quality and content of the existing constituents in essential oils. Where the Test Percentage Content must reach the Minimum standard Percentage Content for each constituent. If there is one type of constituent that does not fulfill minimum standard, the batch will not be marketed because it does not meet the standard quality. Question 1. Create 1-NF, 2-NF, 3-NF Normalization for the available forms. 2. Make an ERD (Entitiy Relationship Diagram) based on the results of Normalization 3-NF. 3. Develop the ERD that you create to implement Generalization / Specialization.

Project Synopsis: database management ABC Walk-in Clinic is located in a large metropolitan city in Canada. The clinic staff consists of ten doctors, six nurses, five office secretaries, two administrative assistants and one manager. First time Patients have to visit the clinic personally and fill a registration form that contains their personal and health related information. An office secretary would then enter that information in the computer based information system. Patients may become a permanent patient (at any time) for one of the doctors at the clinic by filling up necessary forms (they are called enrolled patients) or they may choose to come walk-in for every visit. (They usually called walk-in patients) Enrolled Patients may book their appointments online or by calling, the office and one of the secretaries would then book their appointment with their doctor on a particular day/time. Any booked appointment may be cancelled up to 24 hours in advance after which the clinic…

DATABASE SYSTEMS Exercise TO-DO: Please create an enhanced entity-relationship with ERD below, complete with participation and disjoint constraints.

Dimensionality reduction helps to eliminate irrelevant attributes or reduce possible noise. And, ... Multiple Choice: a) cannot eliminate correlated attributes b) final attributes are no longer orthogonal to each other c)produce new attributes that are orthogonal to each other d) select the best attributes

Airline Management There is a report on poor management of an airline company in South Africa. As a results, the stakeholders decided that all information concerning the assets, operations, and the employees of the company should be organised with the use of a database management system. The database needs to store information about the Airplane (identified by planeid, name as planename, and cruise_range), Flights (identified by ftnum, place of departure as departfrom, destination as arriveto, total milage as tmilage, departure time as departtime, arrival time as arrivetime, and price). Pilots (identified by empid and planeid), and Staff (identified by empid, name as empname, and salary). The Staff relation consist of all the employees of the company including the pilots, and you have been hired to design and manage the database. Source: Okonkwo, C. (2021) Write an SQL query on the following: Determine the identity (planeids) of all airplanes that can fly from Johannesburg to Cape…

Normalization

Relations describe the intersection between two axes, x and y. For example, a table (tuple) found in a database contains columns (attributes) and rows (records or observations). Database and Geospatial Mapping Application developers rely on tables and cartesian coordinate systems to adhere to the rules of relational database theory so that integrity in the location is preserved. Tables should only contain records that relate to the columns found in that table and the data domain determines what records should be stored in a given table. Database administrators can check for integrity in relationships within and between tables using structured query language (SQL). What other computer-science or IT jobs rely on relations?

Sterile Reports Research Example ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information.   Remember the ERD will eventually turn into the design for a database from a top down view.  Make sure you resolve any many to many conflicts.  Label an identifier or primary key and all pertinent attributes given.   If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity.  Therefore, all entities should end up with at least an identifier and another attribute that makes sense. Please use a drawing tool of some type to show the ERD diagram (Word, PowerPoint, and Visio all work well).  I want you to get in the habit of drawing these with a computer instead of by hand, as this will be important as we get to more difficult examples.  You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common.  Make sure you show…

Project Synopsis: DATABASE MANAGEMENT:ABC Walk-in Clinic is located in a large metropolitan city in Canada. The clinic staff consists of ten doctors, six nurses, five office secretaries, two administrative assistants and one manager. First time Patients have to visit the clinic personally and fill a registration form that contains their personal and health related information. An office secretary would then enter that information in the computer based information system. Patients may become a permanent patient (at any time) for one of the doctors at the clinic by filling up necessary forms (they are called enrolled patients) or they may choose to come walk-in for every visit. (They usually called walk-in patients) Enrolled Patients may book their appointments online or by calling, the office and one of the secretaries would then book their appointment with their doctor on a particular day/time. Any booked appointment may be cancelled up to 24 hours in advance after which the clinic…

ERD (Entity-Relationship Diagram) Explanation: The ERD is a high-level representation of the data relationships in the ConfPlus Conference Management System. It shows the main entities, their attributes, and the relationships between them. Entities: User: Represents a user in the system, including authors, reviewers, and organizers. Attributes include UserID, Name, Email, Password, Affiliation, and Role. Paper: Represents an academic paper submitted to the conference. Attributes include PaperID, Title, Abstract, PDF, and SubmissionDate. Authorship: Represents the relationship between a User (author) and a Paper. Attributes include AuthorshipID, UserID, PaperID, and IsPresenter (to indicate if the author is the presenter of the paper). Review: Represents a review assigned to a paper by a User (reviewer). Attributes include ReviewID, UserID, PaperID, OverallEvaluation, Contribution, Strengths, Weaknesses, and ReviewDate. Conference: Represents the conference itself. Attributes include…

Computer Science Relational Model (Logical and Physical Schema Development) The conceptual model developed in phase 2 will be transformed into a logical and physical schema using the relational data model. The outcome of this transformation will be a relational schema. The schema should have the following components: Set of required relations All the integrity constraints Submission and Evaluation: A report consisting of the problem statement, ER diagram, relational schema And implement the database using SQL should include: All the tables properly defined /created All constraints properly defined For each table, few instances of data should be entered.

Big Data Processing One of the benefits from Graph Database is it is significantly faster than traditional RelationalDatabase System (RDBMS), especially for a database with many relations. Create a graph database of the following RDBMS tables with 3 records for each table. The Entity Relationship Diagram represents an Online Course Database. Use a graph diagram that consists of vertices and edges torepresents the graph database. Explain why a database query would be executed significantly faster in the Graph Database than the RDBMS based on the example database.

Course Title: Software EngineeringFull

Random Hospital Example ERD Problem Follow the Simple Procedure for ERD diagramming to design an ERD using the following user provided information.   Remember the ERD will eventually turn into the design for a database from a top down view.  Make sure you resolve any many to many conflicts.  Label an identifier or primary key and all pertinent attributes given.   If an attribute is not readily apparent from the user information, then make one up that makes sense for the particular entity.  Therefore, all entities should end up with at least an identifier and another attribute that makes sense. You may use any of the approaches shown by the book, though the ER-Model and Crow’s foot are the most common.  Make sure you show entities, relationships, cardinality, and optionality.  Random Hospital Example A hospital has 10 wards, each containing up to 20 patients.  Patients have only one doctor allowed to prescribe drugs for them.  Doctors do their rounds once a day and prescribe drugs by…

DATABASE SYSTEM DRAWING E/R DIAGRAM AND RELATIONAL SCHEMA

Database Design Before essential oil products are marketed, testing is carried out based on the production batch of each essential oil. This is done to maintain the quality and content of the constituents in the essential oil. Where the Test Percentage Content must reach the Minimum Percentage Content standard for each constituent. If there is one type of constituent that does not meet the minimum standards, the batch will not be marketed because it does not meet the quality standard. 1. If recording the results of each testing process is still done manually, in your opinion, please explain which approach is suitable between Centralized and View Integration for collecting requirements. 2. What Fact Finding methods will you choose to obtain information related to the development of a database system to record the testing process, and explain the reasons for choosing it. 3. Apply 1-NF, 2-NF, 3-NF Normalization for the available forms

Database Design Before essential oil products are marketed, testing is carried out based on the production batch of each essential oil. This is done to maintain the quality and content of the constituents in the essential oil. Where the Test Percentage Content must reach the Minimum Percentage Content standard for each constituent. If there is one type of constituent that does not meet the minimum standards, the batch will not be marketed because it does not meet the quality standard. 1. If recording the results of each testing process is still done manually, in your opinion, please explain which approach is suitable between Centralized and View Integration for collecting requirements. 2. What Fact Finding methods will you choose to obtain information related to the development of a database system to record the testing process, and explain the reasons for choosing it. 3. Apply 1-NF, 2-NF, 3-NF Normalization for the available forms.

Database Design Before essential oil products are marketed, testing is carried out based on the production batch of each essential oil. This is done to maintain the quality and content of the constituents in the essential oil. Where the Test Percentage Content must reach the Minimum Percentage Content standard for each constituent. If there is one type of constituent that does not meet the minimum standards, the batch will not be marketed because it does not meet the quality standard. 1. If recording the results of each testing process is still done manually, in your opinion, please explain which approach is suitable between Centralized and View Integration for collecting requirements. 2. What Fact Finding methods will you choose to obtain information related to the development of a database system to record the testing process, and explain the reasons for choosing it. Note - Please type the answer and don't write it by hand because it's hard to read

Draw the E-R diagram for the above, providing the degree and cardinalities Suppose a medical group XYZ wants to store information about physicians & patients. Each physician has only one specialty. Patient records are shared among the doctors. For each patient visit, information is stored about the visit type (regular office, after hours, house call, etc), a single diagnosis for that visit, and the charge. Assume that a patient may visit more than one of the doctors on a particular day. We assume, however, that a patient never visits the same doctor more than once in one day. Draw the E-R diagram for the above, providing the degree and cardinalities

database system computer science

Map this ER diagram to a Relational Model and normalize it if needed.

Data Modeling is the first phase in the process of database design and is the most important. Comparing and contrasting the Conceptual data model with the Physical data model is important. With the assistance of an example, demonstrates how to list down data (entities), relationships between data, and limitations on data.