Textbooks

idTitleAuthorSubjectDifficulty_LevelISBN
1CalculusIsaac NewtonMathsIntermediate9783652003
2PhysicsAlbert EinsteinPhysicsAdvanced9781543220
3English LiteratureShakespeareLiteratureBeginner9780141029
4BiologyCharles DarwinScienceIntermediate9780123456
5HistoryHerodotusHistoryAdvanced9787654321

Online_Courses

idCourse_NameInstructorTopicDifficulty_LevelURL
1Computer ScienceJohn DoeProgrammingIntermediatehttps://www.example.com/cs101
2Ancient HistoryJane SmithHistoryAdvancedhttps://www.example.com/history201
3Graphic DesignMike JohnsonDesignBeginnerhttps://www.example.com/design101
4Quantum MechanicsEmma WilsonPhysicsIntermediatehttps://www.example.com/qm101
5Mathematical LogicWilliam BrownMathsAdvancedhttps://www.example.com/ml101

Schools

idNameAddressCityState
1Springfield High School123 Main StSpringfieldIL
2Evergreen Middle School456 Oak AveEvergreenCO
3Sunrise Elementary789 Pine StSunriseCA
4Oakwood College123 Maple DrOakwoodTX
5Riverview Academy456 Cedar LnRiverviewFL

Teachers

idNameSchool_IDDegreeYears_Experience
(→ Schools.id)
1Mr. Thompson1PhD in Math10
2Ms. Williams2MA in English5
3Dr. Baker3PhD in Physics15
4Ms. Rodriguez4BSc in Biology8
5Prof. Lee5PhD in Computer Science20

Students

idFirst_NameLast_NameAgeGrade_Level
1JohnSmith159th
2JaneDoe1610th
3TomHanks148th
4LucyGrey1711th
5MichaelJackson1610th