TakeHomeExam-1_CPRE_414

Consider an online auction database system in which members (buyers and sellers) participate in the sale of items. The data requirements for this system are summarized as follows: Members The online site has members who are identified by a unique member id and are described by an email address, their name, a password, their home address, and a phone number. Supertype and Subtypes for Members A member may be a buyer or a seller, but not both (disjoint subtype).  A member must be one or the other (mandatory or required participation). A buyer has a shipping address recorded in the database. A seller has a bank account number and routing number recorded in the database. Both buyer and seller subtypes (entities) share the primary key with members which is membered. Items Items are placed by a seller for sale and are identified by a unique item number assigned by the system. Items are also described by an item title, an item description, a starting bid price, bidding increment, the start…

OWN WORK. COMPLETE DIAGRAM FOR UPVOTE

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

What is the main difference between network data model and hierarchical data model? Tick all that apply. [ ] There is no difference between network data model and hierarchical data model. [ ] Only hierarchical data model can be represented as a tree graph with records appearing as nodes and sets as edges. [ ] Only network data model allows a node to have more than one parent. [ ] Only in hierarchical data model the relationships are represented by sets.

Need help drawing a conceptual schema and a relational schema (Data bases)

Which one of the following statements accurately describes a major difference between the hierarchical model and the network model?   Question 34 options:   1)  The network model can be used to show many-to-many relationships, but the hierarchical model cannot.   2)  The hierarchical model supports data independence but the network model does not.   3)  The hierarchical model can be used to show many-to-many relationships, but the network model cannot.   4)  The network model is structurally independent, but the hierarchical model is not.

In a database, an entity is a collection of characteristics. An entity might be a tangible thing that exists in our world.Each entity has an attribute, which in the real world is referred to as the object's characteristics. For instance, in a company's employment database, the individual, department, and classification may all be considered entities. These entities possess certain traits that will serve as the relevant entity's attributes.

1. Draw an ER diagram that captures the preceding information.  Identify any constraints not captured by the ER diagram

San Diego Hospital Example ERD Problem Entity Relationship Diagramming is a "top down" user process.  Take the following user provided information and draw the appropriate ERD.  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…

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?

A public sector hospital wants to automate its manual paper based operations to speed up the operations and facilitate its patients and staff members. For this purpose, they want to develop a database for their hospital management system to remove paper based records. Now, you are required to analyze the following scenario very carefully and draw entity relationship diagram (ERD) for the given system by identifying entities, attributes and relationship among these entities. A hospital consists of various specialized wards where each ward has its unique ID, name and capacity (total number of beds for patients in each ward). Multiple patients can be admitted in each ward on the recommendations of the doctor. Each doctor has a unique id, name, specialization and etc. Furthermore, a specialized team of doctors in each ward will take care of admitted patients and suggest treatment for the patients (such as medication, recommended tests, date of admission, and date of discharge). Each ward…

Course Title: Software EngineeringFull

OWN WORK. COMPLETE DIAGRAM FOR UPVOTE

There are many dietitians in the center. There are also many clients in the center. A dietitian gives a menu to a client every week. Many diet menus are available. A diet menu consists of many food items and each food items belongs to one food category. • Identify the relationship between Entities (clearly showing the cardinality and participation) The question is very clear slove it according to it

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.

this is an ER Diagram in database question please

ER modeling is one approach in creating a data model. There are several approaches in creating a data model (bottom up, top down, inside out, and mix). 1. explain each of these approaches!2. Then explain when we use top down, bottom up, inside out and mix? what is the function of each of the approaches?

Consider a database that includes the entity sets student, course, and sectionfrom the university schema and that additionally records the marks that studentsreceive in different exams of different sections.a. Construct an E-R diagram that models exams as entities and uses a ternaryrelationship as part of the design.b. Construct an alternative E-R diagram that uses only a binary relationshipbetween student and section. Make sure that only one relationship existsbetween a particular student and section pair, yet you can represent themarks that a student gets in different exams.