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- Suppose ABC College want to digitalize the record of major and minor project. For this the organization have to maintain student, supervisor, coordinator, product details (hardware and software), staffs, rooms. Draw an efficient ER diagram considering the project scenario of ABC College. Also show relational database schema including Primary and Foreign key constraints.(Draw it on a paper)arrow_forwardReview the order system context diagram and compare it to the order system diagram 0 DFD. Answer the following questions: How many external entities are shown in each diagram? In each diagram, how many data flows connect to the external entities? How many sub-processes are identified in the diagram 0 DFD? Could the datastore have been shown in the context diagram? Why or why not?arrow_forwardDevelop a conceptual data model reflecting the following requirements:• Identification of the relations (entity types).• Identification of relationship types and their participation and cardinality constraints.• Identification of attributes and association of attributes with entity or relationship types.• Determination of candidate and primary key attributes of entity types.• Determination of specialization/generalization and categorization relationships, whenever it is appropriate.• Enhanced Entity-Relationship (EER) diagram to reflect the requirements. Develop an airport information system to organize all information about all the airplanes stationedand maintained at the airport in the XYZ county. You need to specify the assumptions that areused in your design, if there is any. The relevant information is as follows:• Every airplane has a registration number, and each airplane is of a specific model.• The airport accommodates a number of airplane models, and each model is…arrow_forward
- Page of 2 ZOOM 44-460 Database Systems Chapter 3 Assignment Spring 2022 Draw an EER diagram to represent the following situation: When appropriate, model an associative entity. A rental property would like to store information about TENANT, DEPENDENTs and Payment. The property would like to store information about Tenant: Unique Tenant Id, Tenant Name(first and last) , Address(Street, City, State) , Phonenumbers (country, Area, local), Email Address and House Type. A housetype can be a Townhouse, Apartment or Individual house. For a Apartment, we will store Unique Apart number, number of rooms; for an Individual house, we will store Unique House number, size of house. We will not store any additional information about Townhouse. Dependents are depended on the tenants. Dependent can be uniquely identified by their name. For PAYMENTs, the following information will be stored: a unique payment id, the Bank name associated with the form of payment…arrow_forwardComputer Science Produce an Extended Entity Relationship Model (EERM) with cardinality and attributes for the selected part of the Case Study requirements. A Cars4U vehicle hire company wishes to develop a centralised database for its operations. Currently each regional office is free to manage its own affairs, often done using spreadsheets. This has resulted in a multitude of contradictory systems, some manual, some computerised, with consequent data duplication and delays in terms of drawing up hire agreements, redistributing vehicles to customers after inspection etc.. In the case of a Corporate Customer (hereafter called the Company) there may be several regional offices associated with the Company in different locations (for example BT Leeds, BT Newcastle ...) The account that the Company holds with CARS4U may be held at the Company headquarters even though the hire arrangements may be conducted with regional offices. Alternatively, each Company regional office may act…arrow_forwardDraw an ER diagram of ONLINE COURSE REGISRATION database, that captures all the given below requirements. Specify key attribute(s) of each entity set. For each relationship set, specify structural constraints and participation constraintsarrow_forward
- 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. Construct an E-R diagram that models exams as entities and uses a ternary relationship as part of the design.arrow_forwardConsider a database system for a Wholesale Management System. The data requirements are summarized as follows: o Maintain the details of stock like their id, name, quantity. o Maintain the details of buyers from which manager must buy the stock like buyer id, name, address, stock id to be bought. o Details of customers i.e. name, address, id. o Defaulters list of customers who have not paid their pending amount after the due date So List of payment paid or pending. o The stock that is to buy if quantity goes less than a particular amount. o Profit calculation for a month. o Quantity cannot be sold to a customer if the required amount is not present in stock and date of delivery should be maintained up to which stock can be provided. SQL Queries: 1. List of payment paid or pending customers. 2. Find the Defaulters list of customers who have not paid their pending amount. 3. Find the details of customers name, address, id. 4. Find Query to get information of employee where employee is…arrow_forwardWhy is ensuring "transaction durability" paramount in systems handling critical data?arrow_forward
- Draw an ER diagram for the EMU Slimming Center based on the specification given below. Case Study 01 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. Instructions • Identify the relationship between Entities (clearly showing the cardinality and participation)arrow_forwardDraw a entity relationship diagram (ERD) for the following situation: The State of Georgia is interested in designing a database that will track its researchers. Information of interest includes, researcher name, title, position, university name, location, enrollment, and research interests. Each researcher is associated with only one institution and each researcher has several research interests.arrow_forward. Short Answer: 1. With an example explain what a derived attribute is? 2. Explain levels of database with the help of suitable example. 3. What are weak Entities? How are they represented in database? 4. Define data model. Explain record-based data models using diagrams. 5. Explain difference between 1:1 and 1: M relationship. II. Application 1. Draw any ER Diagram which demonstrates the following a. Entity b. Attribute c. Multi-valued attribute d. Composite attribute e. Derived attribute handwriting fo er diagramarrow_forward
- Principles of Information Systems (MindTap Course...Computer ScienceISBN:9781285867168Author:Ralph Stair, George ReynoldsPublisher:Cengage Learning