1. The following E-R diagram has a number of problems. Identify the problems and suggest ways in which to solve them. EMPLOYEE EmployeeID Name Phone Number DEPARTMENT Department Number DepartmentName SupervisorID lives at ADDRESS AddressID Street City State PostCode STORE StoreID StoreName DepartmentID

1. The following E-R diagram has a number of problems. Identify the problems and suggest ways in which to solve them. EMPLOYEE EmployeeID Name Phone Number DEPARTMENT Department Number DepartmentName SupervisorID lives at ADDRESS AddressID Street City State PostCode STORE StoreID StoreName DepartmentID

Fundamentals of Information Systems

8th Edition

ISBN:9781305082168

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter7: Knowledge Management And Specialized Information Systems

Section: Chapter Questions

Problem 13SAT

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convert this plain text to ER diagram , I attached a picture with question for one diagram and it's wrong because there is no bookning "Each office employs one or more dentists, hygienists, andreceptionists each of whom have an employee number. Patientsare free to use any dental office but, naturally, must makeappointments in advance. A record of all such appointments iskept which specifies the patient’s name, the date and time ofthe appointment and a list of services performed. Adultpatients have a SIN (Social Insurance Number) but theirchildren typically do not. Each office provides specific services(e.g. cleaning, filling, X-rays, extraction, etc.) to the patients andbills them accordingly. Performing certain services consumessupplies (e.g. floss, amalgam, X-ray film, etc.). Such suppliesare purchased from a variety of suppliers each of whom isidentifiable by a unique supplier code. The current amount ofeach type of supply available is tracked so that when suppliesrun low, a new…
Give examples to demonstrate your understanding of how to distinguish between physical and schematic models
Consider a scenario where a lead software development company in Silicon Valley has hired you to build its organization’s hierarchical software. After completely understanding the hierarchy, apply your knowledge of data structures to, give the code that you would write to find the lowest level and top level employee? Note: use C++ programming language . Use tree data structure.
Provide examples to illustrate your ability to differentiate between physical and schematic representations.
35. For the following problem case description: Identify the objects of interest, potential classes Draw the software architecture diagram. Draw a sequence diagram for this use case Use case name Plantrip Entry condition The Driver logs into the trip planning service. Flow of events 1. The Driver enters constraints for a trip as a sequence of destinations. 2. Based on a database of maps, the planning service computes the shortest way of visiting the destinations in the specified order. The result is a sequence of travel segments concatenated together and a list of directions. 3. The Driver can revise the trip by adding or removing destinations. Exit condition The Driver saves the planned trip by name in the planning service database for later retrieval..
Exercise 7-6 Symbolize the following so as to reveal as much logical structure as possible. Indicate the meanings of your abbreviations. 1. All marsupials have pouches. 3. Actually, not all marsupials have pouches. 5. Kangaroos and opossums are both marsupials. 7. Koala bears are not really bears at all. 9. Marsupials can be found in their natural habitats in both Australia and North America. 11.
The wait-for graph represents A. Relations betwenn diffrenet processes B. Relations between diffrent resources C. Relation of OS with different resources D. All of the answers
1. PART (40%): Evaluation and optimization:A schema of the ski shop information system is given:Customer (cid, name, surname, address, telephone);Employee (eid, name, surname, address, telephone);Purchase (pid, sid, cid, eid, date);Skiis (sid, brand, model, length, hardness)Additional information is given:|Customer| =150 pages, 40 records/page|Employee| = 2 pages, 40 records/page|Purchase| = 2000 pages, 100 records/page|Skiis| = 250 pages, 30 records/pageBuffer can store up to 2500 pages.Let's assume that the following indices are now set on the schema from the previoustask:- Level 2 B+ index on the attribute Purchase.date- Hash index on the attribute Skiis.sidOur DBMS has the following algorithms to perform the join:- Hash join- Index nested loops join- Sort-merge joinTranslate the following SQL query into relational algebra and find the plan that readsthe fewest pages or blocks:SELECT Skiis.model, Skiis.lengthFROM Skiis JOIN Purchase ON (Skiis.sid = Purchase.sid)WHERE Skiis.brand =…
In OOAD, visibility refers to... Explain its importance in obtaining high levels of abstraction. What are the many types? Include illustrations and code samples to assist you demonstrate your arguments.
How does an ADT do the duties that are given to it? What precisely is an ADT?Does the administration of ADTs have any potential drawbacks? Can you think of any additional ways that heredity aids in resolving problems that individuals encounter?
What comes to mind when you think of email? What occurs after an email has been sent? Make a note of everything you have learned up to this point. Does anybody know what these disparities' root causes are, and if so, what they are? Do your models support various degrees of complexity?
Correct answer will be upvoted else downvoted. Computer science. You are permitted to alter the marks through the accompanying activity: Pick two particular integers I and j among 1 and n. Trade the marks of focuses I and j, lastly Draw the section between focuses I and j. A grouping of tasks is legitimate if in the wake of applying every one of the activities in the succession all together, the k-th point winds up having the name k for all k among 1 and n comprehensive, and the drawn sections don't meet each other inside. Officially, assuming two of the portions cross, they should do as such at a typical endpoint of the two sections. Specifically, all drawn portions should be unmistakable. Track down any legitimate arrangement of activities, or say that none exist. Input The main line contains an integer n (3≤n≤2000) — the number of focuses. The I-th of the accompanying n lines contains three integers xi, yi, man-made intelligence (−106≤xi,yi≤106,…