![SUMMARY OF ER-DIAGRAM NOTATION FOR ER SCHEMAS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Symbol R E 2 E 1 R E 2 R (min,max) E N E 1](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Erd examples
- 1. The (min,max) notation Employee Department Manages (1,1) (0,1) Employee Department Works-for (1,N) (1,1)
- 3. ER DIAGRAM – Entity Types are: EMPLOYEE, DEPARTMENT, PROJECT, DEPENDENT
- 4. COMPANY ER Schema Diagram using (min, max) notation
- 6. University ER Diagram Student Class StudentID SSN Sex Zip Degree City Birth date State Name Address Section Instructor Year Semester SectionNumber GPA Numeric Grade Letter Grade Grade_Report Belong_To Offer Minor In Major In Department DName DCode OfficeNumber OfficePhone College Course CName CourseDesc CNumber Credits
- 7. ER DIAGRAM FOR A BANK DATABASE © The Benjamin/Cummings Publishing Company, Inc. 1994, Elmasri/Navathe, Fundamentals of Database Systems, Second Edition
- 8. FIGURE 3.17 An ER diagram for an AIRLINE database schema.