SlideShare a Scribd company logo
The following figure shows an example of an EER diagram for a small private airport database
that is used to keep track of airplanes, their owners, airport employees, and pilots. From the
requirements for this database, the following information was collected: Each airplane has a
registration number [Reg#], is of a particular plane type [of_type], and is stored in a particular
hangar [stored_in]. Each plane_type has a model number [Model], a capacity [Capacity], and a
weight [Weight]. Each hangar has a number [Number], a capacity [Capacity], and a location
[Location]. The database also keeps track of the owners of each plane [owns] and the employees
who have maintained the plane [maintain]. Each relationship instance in owns relates an airplane
to an owner and includes the purchase date [Pdate]. Each relationship instance in maintain relates
to an employee to a service record [service]. Each plane undergoes service many times; hence, it
is related by [plane_service] o a number of service records. A service record includes as
attributes the date of maintenance [Date], the number of hours spent on the work [Hours], and
the type of work done [Workcode]. We use a weak entity type [service] to represent airplane
service, because the airplane registration number is used to identify a service record. An owner is
either a person or a corporation. Hence, we use a union type (category) [owner] that is a subset of
the union of corporation [Corporation] and person [Person] entity types. Both pilots {Pilot] and
employ
ees [Employee] are subclasses of person. Each pilot has specific attributes license number
[Lic_Num] and restrictions [Restr]; each employee has specific attributes salary [Salary] and
shift {Shift]. All person entities in the database have data kept on their social security number
[Ssn], name [Name], address [Address], and telephone number [Phone]. For corporation entities,
the data kept includes name [Name], address [Address], and telephone number [Phone]. The
database also keeps track of the types of planes each pilot is authorized to fly [Flies] and the
types of planes each employee can do maintenance work on [Works_on].

More Related Content

Similar to The following figure shows an example of an EER diagram for a small pr.pdf

simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.comsimple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
hk2208820
 
Air Travel Analytics in SAS
Air Travel Analytics in SASAir Travel Analytics in SAS
Air Travel Analytics in SASRohan Nanda
 
Airlines Reservation System
Airlines Reservation SystemAirlines Reservation System
Airlines Reservation System
Anit Thapaliya
 
Airlineppt 160621085220 (1)
Airlineppt 160621085220 (1)Airlineppt 160621085220 (1)
Airlineppt 160621085220 (1)
ISAH BABAYO
 
Airline Reservation System - Software Engineering
Airline Reservation System - Software EngineeringAirline Reservation System - Software Engineering
Airline Reservation System - Software Engineering
Drishti Bhalla
 
Air_Ticket_Reservation_System_presentati.pptx
Air_Ticket_Reservation_System_presentati.pptxAir_Ticket_Reservation_System_presentati.pptx
Air_Ticket_Reservation_System_presentati.pptx
AnilVastav
 
This is a class diagram representing a Parking Garage system with the.docx
This is a class diagram representing a Parking Garage system with the.docxThis is a class diagram representing a Parking Garage system with the.docx
This is a class diagram representing a Parking Garage system with the.docx
AlexanderGUyClarkc
 
[Challenge:Future] Database for Airport
[Challenge:Future] Database for Airport[Challenge:Future] Database for Airport
[Challenge:Future] Database for AirportChallenge:Future
 
Amadeus PPT
Amadeus PPTAmadeus PPT
Amadeus PPT
Anuj Awasthi
 
Amadeus_Guide.pdf
Amadeus_Guide.pdfAmadeus_Guide.pdf
Amadeus_Guide.pdf
ssuseraf4381
 

Similar to The following figure shows an example of an EER diagram for a small pr.pdf (11)

simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.comsimple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
simple airline database project..By Amarulla khan, :- amarullakhan8@gmail.com
 
Air Travel Analytics in SAS
Air Travel Analytics in SASAir Travel Analytics in SAS
Air Travel Analytics in SAS
 
Airlines Reservation System
Airlines Reservation SystemAirlines Reservation System
Airlines Reservation System
 
Airlineppt 160621085220 (1)
Airlineppt 160621085220 (1)Airlineppt 160621085220 (1)
Airlineppt 160621085220 (1)
 
Airline Reservation System - Software Engineering
Airline Reservation System - Software EngineeringAirline Reservation System - Software Engineering
Airline Reservation System - Software Engineering
 
Air_Ticket_Reservation_System_presentati.pptx
Air_Ticket_Reservation_System_presentati.pptxAir_Ticket_Reservation_System_presentati.pptx
Air_Ticket_Reservation_System_presentati.pptx
 
This is a class diagram representing a Parking Garage system with the.docx
This is a class diagram representing a Parking Garage system with the.docxThis is a class diagram representing a Parking Garage system with the.docx
This is a class diagram representing a Parking Garage system with the.docx
 
[Challenge:Future] Database for Airport
[Challenge:Future] Database for Airport[Challenge:Future] Database for Airport
[Challenge:Future] Database for Airport
 
Elm04 05
Elm04 05Elm04 05
Elm04 05
 
Amadeus PPT
Amadeus PPTAmadeus PPT
Amadeus PPT
 
Amadeus_Guide.pdf
Amadeus_Guide.pdfAmadeus_Guide.pdf
Amadeus_Guide.pdf
 

More from RyanGMMDickenss

The gross earnings of factory workers for Oriole Company during the mo.pdf
The gross earnings of factory workers for Oriole Company during the mo.pdfThe gross earnings of factory workers for Oriole Company during the mo.pdf
The gross earnings of factory workers for Oriole Company during the mo.pdf
RyanGMMDickenss
 
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdfThe KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
RyanGMMDickenss
 
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdfThe KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
RyanGMMDickenss
 
The key to franchising is A- concentrate on local marketing B-rapid e.pdf
The key to franchising is  A- concentrate on local marketing B-rapid e.pdfThe key to franchising is  A- concentrate on local marketing B-rapid e.pdf
The key to franchising is A- concentrate on local marketing B-rapid e.pdf
RyanGMMDickenss
 
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdfThe IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
RyanGMMDickenss
 
The International Monetary Fund often requires low- or middle-income n.pdf
The International Monetary Fund often requires low- or middle-income n.pdfThe International Monetary Fund often requires low- or middle-income n.pdf
The International Monetary Fund often requires low- or middle-income n.pdf
RyanGMMDickenss
 
The IRS was interested in the number of individual tax forms prepared.pdf
The IRS was interested in the number of individual tax forms prepared.pdfThe IRS was interested in the number of individual tax forms prepared.pdf
The IRS was interested in the number of individual tax forms prepared.pdf
RyanGMMDickenss
 
The information below relates to the Cash account in the ledger of She.pdf
The information below relates to the Cash account in the ledger of She.pdfThe information below relates to the Cash account in the ledger of She.pdf
The information below relates to the Cash account in the ledger of She.pdf
RyanGMMDickenss
 
The increased access to internet and improved bandwidth speed across t.pdf
The increased access to internet and improved bandwidth speed across t.pdfThe increased access to internet and improved bandwidth speed across t.pdf
The increased access to internet and improved bandwidth speed across t.pdf
RyanGMMDickenss
 
The importance of Net Present Value (NPV) and Internal Rate of return.pdf
The importance of Net Present Value (NPV) and Internal Rate of return.pdfThe importance of Net Present Value (NPV) and Internal Rate of return.pdf
The importance of Net Present Value (NPV) and Internal Rate of return.pdf
RyanGMMDickenss
 
The image below is a cross-section of an area in nertheen New Mexico w.pdf
The image below is a cross-section of an area in nertheen New Mexico w.pdfThe image below is a cross-section of an area in nertheen New Mexico w.pdf
The image below is a cross-section of an area in nertheen New Mexico w.pdf
RyanGMMDickenss
 
The inclusion of epicycles into planetary models was a violation of wh.pdf
The inclusion of epicycles into planetary models was a violation of wh.pdfThe inclusion of epicycles into planetary models was a violation of wh.pdf
The inclusion of epicycles into planetary models was a violation of wh.pdf
RyanGMMDickenss
 
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdfThe human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
RyanGMMDickenss
 
The Gross Domestic Product per capita in China (a middle income countr.pdf
The Gross Domestic Product per capita in China (a middle income countr.pdfThe Gross Domestic Product per capita in China (a middle income countr.pdf
The Gross Domestic Product per capita in China (a middle income countr.pdf
RyanGMMDickenss
 
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdfThe group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
RyanGMMDickenss
 
The graph below was generated from data collected by Conner and Hall (.pdf
The graph below was generated from data collected by Conner and Hall (.pdfThe graph below was generated from data collected by Conner and Hall (.pdf
The graph below was generated from data collected by Conner and Hall (.pdf
RyanGMMDickenss
 
The Framers attempted to restrain the president in their commander-in-.pdf
The Framers attempted to restrain the president in their commander-in-.pdfThe Framers attempted to restrain the president in their commander-in-.pdf
The Framers attempted to restrain the president in their commander-in-.pdf
RyanGMMDickenss
 
The following is the adjusted trial balance of Wilson Trucking Company.pdf
The following is the adjusted trial balance of Wilson Trucking Company.pdfThe following is the adjusted trial balance of Wilson Trucking Company.pdf
The following is the adjusted trial balance of Wilson Trucking Company.pdf
RyanGMMDickenss
 
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdfThe Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
RyanGMMDickenss
 
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdfThe following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
RyanGMMDickenss
 

More from RyanGMMDickenss (20)

The gross earnings of factory workers for Oriole Company during the mo.pdf
The gross earnings of factory workers for Oriole Company during the mo.pdfThe gross earnings of factory workers for Oriole Company during the mo.pdf
The gross earnings of factory workers for Oriole Company during the mo.pdf
 
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdfThe KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio.pdf
 
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdfThe KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
The KwaZulu-Natal Provincial Department has embarked on a multi-millio (1).pdf
 
The key to franchising is A- concentrate on local marketing B-rapid e.pdf
The key to franchising is  A- concentrate on local marketing B-rapid e.pdfThe key to franchising is  A- concentrate on local marketing B-rapid e.pdf
The key to franchising is A- concentrate on local marketing B-rapid e.pdf
 
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdfThe IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
The IRS is most likely to disallow an acquisition if it- Multiple Choi.pdf
 
The International Monetary Fund often requires low- or middle-income n.pdf
The International Monetary Fund often requires low- or middle-income n.pdfThe International Monetary Fund often requires low- or middle-income n.pdf
The International Monetary Fund often requires low- or middle-income n.pdf
 
The IRS was interested in the number of individual tax forms prepared.pdf
The IRS was interested in the number of individual tax forms prepared.pdfThe IRS was interested in the number of individual tax forms prepared.pdf
The IRS was interested in the number of individual tax forms prepared.pdf
 
The information below relates to the Cash account in the ledger of She.pdf
The information below relates to the Cash account in the ledger of She.pdfThe information below relates to the Cash account in the ledger of She.pdf
The information below relates to the Cash account in the ledger of She.pdf
 
The increased access to internet and improved bandwidth speed across t.pdf
The increased access to internet and improved bandwidth speed across t.pdfThe increased access to internet and improved bandwidth speed across t.pdf
The increased access to internet and improved bandwidth speed across t.pdf
 
The importance of Net Present Value (NPV) and Internal Rate of return.pdf
The importance of Net Present Value (NPV) and Internal Rate of return.pdfThe importance of Net Present Value (NPV) and Internal Rate of return.pdf
The importance of Net Present Value (NPV) and Internal Rate of return.pdf
 
The image below is a cross-section of an area in nertheen New Mexico w.pdf
The image below is a cross-section of an area in nertheen New Mexico w.pdfThe image below is a cross-section of an area in nertheen New Mexico w.pdf
The image below is a cross-section of an area in nertheen New Mexico w.pdf
 
The inclusion of epicycles into planetary models was a violation of wh.pdf
The inclusion of epicycles into planetary models was a violation of wh.pdfThe inclusion of epicycles into planetary models was a violation of wh.pdf
The inclusion of epicycles into planetary models was a violation of wh.pdf
 
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdfThe human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
The human immunodeficiency virus (HIV) causes AIDS by attacking cytoto.pdf
 
The Gross Domestic Product per capita in China (a middle income countr.pdf
The Gross Domestic Product per capita in China (a middle income countr.pdfThe Gross Domestic Product per capita in China (a middle income countr.pdf
The Gross Domestic Product per capita in China (a middle income countr.pdf
 
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdfThe group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
The group archaeplastida includes plants- charophytes- chlorophytes- a.pdf
 
The graph below was generated from data collected by Conner and Hall (.pdf
The graph below was generated from data collected by Conner and Hall (.pdfThe graph below was generated from data collected by Conner and Hall (.pdf
The graph below was generated from data collected by Conner and Hall (.pdf
 
The Framers attempted to restrain the president in their commander-in-.pdf
The Framers attempted to restrain the president in their commander-in-.pdfThe Framers attempted to restrain the president in their commander-in-.pdf
The Framers attempted to restrain the president in their commander-in-.pdf
 
The following is the adjusted trial balance of Wilson Trucking Company.pdf
The following is the adjusted trial balance of Wilson Trucking Company.pdfThe following is the adjusted trial balance of Wilson Trucking Company.pdf
The following is the adjusted trial balance of Wilson Trucking Company.pdf
 
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdfThe Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
The Fourth Crusade write one to two paragraphs on this Explain how thi.pdf
 
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdfThe following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
The following partial balance sheet ( $ in thousands) for Paisano Seaf.pdf
 

Recently uploaded

Normal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of LabourNormal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of Labour
Wasim Ak
 
A Strategic Approach: GenAI in Education
A Strategic Approach: GenAI in EducationA Strategic Approach: GenAI in Education
A Strategic Approach: GenAI in Education
Peter Windle
 
Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.
Ashokrao Mane college of Pharmacy Peth-Vadgaon
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
Balvir Singh
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
EverAndrsGuerraGuerr
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
Tamralipta Mahavidyalaya
 
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th SemesterGuidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Atul Kumar Singh
 
CACJapan - GROUP Presentation 1- Wk 4.pdf
CACJapan - GROUP Presentation 1- Wk 4.pdfCACJapan - GROUP Presentation 1- Wk 4.pdf
CACJapan - GROUP Presentation 1- Wk 4.pdf
camakaiclarkmusic
 
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptxA Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptx
thanhdowork
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
Celine George
 
The basics of sentences session 5pptx.pptx
The basics of sentences session 5pptx.pptxThe basics of sentences session 5pptx.pptx
The basics of sentences session 5pptx.pptx
heathfieldcps1
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Thiyagu K
 
Multithreading_in_C++ - std::thread, race condition
Multithreading_in_C++ - std::thread, race conditionMultithreading_in_C++ - std::thread, race condition
Multithreading_in_C++ - std::thread, race condition
Mohammed Sikander
 
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBCSTRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
kimdan468
 
Lapbook sobre os Regimes Totalitários.pdf
Lapbook sobre os Regimes Totalitários.pdfLapbook sobre os Regimes Totalitários.pdf
Lapbook sobre os Regimes Totalitários.pdf
Jean Carlos Nunes Paixão
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
Levi Shapiro
 
Language Across the Curriculm LAC B.Ed.
Language Across the  Curriculm LAC B.Ed.Language Across the  Curriculm LAC B.Ed.
Language Across the Curriculm LAC B.Ed.
Atul Kumar Singh
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
Vikramjit Singh
 
Acetabularia Information For Class 9 .docx
Acetabularia Information For Class 9  .docxAcetabularia Information For Class 9  .docx
Acetabularia Information For Class 9 .docx
vaibhavrinwa19
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
TechSoup
 

Recently uploaded (20)

Normal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of LabourNormal Labour/ Stages of Labour/ Mechanism of Labour
Normal Labour/ Stages of Labour/ Mechanism of Labour
 
A Strategic Approach: GenAI in Education
A Strategic Approach: GenAI in EducationA Strategic Approach: GenAI in Education
A Strategic Approach: GenAI in Education
 
Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.Biological Screening of Herbal Drugs in detailed.
Biological Screening of Herbal Drugs in detailed.
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
 
Thesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.pptThesis Statement for students diagnonsed withADHD.ppt
Thesis Statement for students diagnonsed withADHD.ppt
 
Home assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdfHome assignment II on Spectroscopy 2024 Answers.pdf
Home assignment II on Spectroscopy 2024 Answers.pdf
 
Guidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th SemesterGuidance_and_Counselling.pdf B.Ed. 4th Semester
Guidance_and_Counselling.pdf B.Ed. 4th Semester
 
CACJapan - GROUP Presentation 1- Wk 4.pdf
CACJapan - GROUP Presentation 1- Wk 4.pdfCACJapan - GROUP Presentation 1- Wk 4.pdf
CACJapan - GROUP Presentation 1- Wk 4.pdf
 
A Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptxA Survey of Techniques for Maximizing LLM Performance.pptx
A Survey of Techniques for Maximizing LLM Performance.pptx
 
Model Attribute Check Company Auto Property
Model Attribute  Check Company Auto PropertyModel Attribute  Check Company Auto Property
Model Attribute Check Company Auto Property
 
The basics of sentences session 5pptx.pptx
The basics of sentences session 5pptx.pptxThe basics of sentences session 5pptx.pptx
The basics of sentences session 5pptx.pptx
 
Unit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdfUnit 2- Research Aptitude (UGC NET Paper I).pdf
Unit 2- Research Aptitude (UGC NET Paper I).pdf
 
Multithreading_in_C++ - std::thread, race condition
Multithreading_in_C++ - std::thread, race conditionMultithreading_in_C++ - std::thread, race condition
Multithreading_in_C++ - std::thread, race condition
 
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBCSTRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
STRAND 3 HYGIENIC PRACTICES.pptx GRADE 7 CBC
 
Lapbook sobre os Regimes Totalitários.pdf
Lapbook sobre os Regimes Totalitários.pdfLapbook sobre os Regimes Totalitários.pdf
Lapbook sobre os Regimes Totalitários.pdf
 
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
 
Language Across the Curriculm LAC B.Ed.
Language Across the  Curriculm LAC B.Ed.Language Across the  Curriculm LAC B.Ed.
Language Across the Curriculm LAC B.Ed.
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
 
Acetabularia Information For Class 9 .docx
Acetabularia Information For Class 9  .docxAcetabularia Information For Class 9  .docx
Acetabularia Information For Class 9 .docx
 
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup   New Member Orientation and Q&A (May 2024).pdfWelcome to TechSoup   New Member Orientation and Q&A (May 2024).pdf
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdf
 

The following figure shows an example of an EER diagram for a small pr.pdf

  • 1. The following figure shows an example of an EER diagram for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots. From the requirements for this database, the following information was collected: Each airplane has a registration number [Reg#], is of a particular plane type [of_type], and is stored in a particular hangar [stored_in]. Each plane_type has a model number [Model], a capacity [Capacity], and a weight [Weight]. Each hangar has a number [Number], a capacity [Capacity], and a location [Location]. The database also keeps track of the owners of each plane [owns] and the employees who have maintained the plane [maintain]. Each relationship instance in owns relates an airplane to an owner and includes the purchase date [Pdate]. Each relationship instance in maintain relates to an employee to a service record [service]. Each plane undergoes service many times; hence, it is related by [plane_service] o a number of service records. A service record includes as attributes the date of maintenance [Date], the number of hours spent on the work [Hours], and the type of work done [Workcode]. We use a weak entity type [service] to represent airplane service, because the airplane registration number is used to identify a service record. An owner is either a person or a corporation. Hence, we use a union type (category) [owner] that is a subset of the union of corporation [Corporation] and person [Person] entity types. Both pilots {Pilot] and employ ees [Employee] are subclasses of person. Each pilot has specific attributes license number [Lic_Num] and restrictions [Restr]; each employee has specific attributes salary [Salary] and shift {Shift]. All person entities in the database have data kept on their social security number [Ssn], name [Name], address [Address], and telephone number [Phone]. For corporation entities, the data kept includes name [Name], address [Address], and telephone number [Phone]. The database also keeps track of the types of planes each pilot is authorized to fly [Flies] and the types of planes each employee can do maintenance work on [Works_on].