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Draw the relationships and entities model for each of the following:
* in the traditional way* for example: see the pic??.
In the
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- Is it true that associated entities are also weak? Why do you think that is? Is there anything unique about their "weakness" if this is the case?16 We would like to design a database to maintain information about COURSES in a Faculty. Each COURSE has a code, name number of credit hours and the department that offers it. A COURSE may have zero, one, or many prerequisite COURSES. A COURSE may be a prerequisite for zero, one, or many COURSES 2"What is the degree of the relationship type'prerequisite of a. A unary (recursive) relationship O b. A binary relationship cA ternary relationship O d. This relationship is NOT exist OProduce an entity relationship diagram for a relational database that will be able to address the case study. It is your task to design a database that will adhere to good design principles.
- If we have a set of attributes as R: (W, X, Y, Z) and functional dependencies are: Z -> W Y -> XZ XW -> Y What is the candidate key(s)?Please! can you help me doing Conceptual Analysis for this scenario. I have attached another screenshot to followup with dataChange the Class Diagram to have (Generalization, Aggregation, Composition, Association and multiplicity) relations.
- Styles Consider the following database instance. Table name: Students Primary key: sid Sid udej6 sname Ricky Ellen 2. 6. 4 MaryLou Ellen Table name: Courses Primary key: cid cid C1 cname ICS Finance 2. Table name: Register Primary key: sid.cid Foreign key: sid references Students(sid) Foreign key: cid references Courses(cid) sid cid 2 2. 1 1 5.1) For each of the following statements, show whether the statement is correctly executed or not (assume that the statements are executed in order, which means that if a statement is correctly executed, its effect is reflected in the following statement). If you say the statement is not executed, explain why. INSERT INTO Students VALUES (3, Ellen'); b. INSERT INTO Students VALUES (6, Ellen'); DFocL 72710 The resulting list for each object consists of ordered pairs , which define all domains with a nonempty set of access rights for that object. This statement is TRUE with respect to which of the following methods of access matrix implementation. Global Table Access list for objects Capability list for domains lock-key schemeThe objective is to create a system that allows you to completely manage the functions of thecompany through an optimal design of the data model, to be adapted to a system connected to aSQL database. StatementThe pharmacy chain “Recetas Rayos X” needs a system to manage information about its operations, such as the purchase, sale and administration of medications, other patients and who prescribed them.a medicine. The information that must be stored is the following:1. Patients are identified by the RUT and the name, surname, date of birth, email,address, several telephone numbers and pension system.2. There are various health provisions, both social and private, and they are correctly codified.3. Doctors are identified by the RUT. For each doctor you have to store the first name, last name,date of birth, specialties and years of practice.4. There are various specialties which are adequately codified.5. Each pharmaceutical company is identified by a code, the name and a telephone…
- Task 1: The InstantRide Management team founded a new team for car maintenance. The new team is responsible for the small maintenance operations for the cars in the InstantRide system. The main idea is to take actions faster and minimize the time spent for the maintenance. Therefore, the Car Maintenance team wants to store MAINTENACE_TYPE_ID (char(5)) and a MAINTENANCE_TYPE_DESCRIPTION (varchar(30)) in the database. Using MAINTENANCE_TYPE_ID as the PRIMARY KEY, create a new table, MAINTENANCE_TYPES, and send the table description with the column names and types to the Car Maintenance team.The objective is to create a system that allows you to completely manage the functions of thecompany through an optimal design of the data model, to be adapted to a system connected to aSQL database. StatementThe pharmacy chain “Recetas Rayos X” needs a system to manage information about its operations, such as the purchase, sale and administration of medications, other patients and who prescribed them.a medicine. The information that must be stored is the following:1. Patients are identified by the RUT and the name, surname, date of birth, email,address, several telephone numbers and pension system.2. There are various health provisions, both social and private, and they are correctly codified.3. Doctors are identified by the RUT. For each doctor you have to store the first name, last name,date of birth, specialties and years of practice.4. There are various specialties which are adequately codified.5. Each pharmaceutical company is identified by a code, the name and a telephone…Your Division Head's point of view is as follows: "Pictures are stored in a database, and the basic design/structure we chose includes some very sensitive driver information." What if we placed it in its own folder, out of reach of people who shouldn't have access to it? What would your stance be, or, more precisely, which strategy would you prefer? It is necessary to present justification.