Integrated Database Approach for Geodetic Applications* Integrated Database Approach for Geodetic Applications
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چکیده
INTEGRATED DATABASE APPROACH ..................... 3 Database Schemes and Instances ........................ 4 Data Models ................................. 6 THE ENTITY RELATIONSHIP MODEL ..................... 8 ER Schemes and ER Diagrams ......................... 12 Weak Entity Types .............................. 12 ER SCHEMES FOR THE SAMPLE GEODETIC APPLICATION .......... 13 TRANSLATING ER SCHEMES INTO RELATIONAL DATABASE SCHEMES .... 13 Foundations of the Relational Data Model .................... 16 Transformation Rules ............................. 16 FURTHER DATA ABSTRACTION CONCEPTS .................. 18 CONCLUSION .................................. 18 BIBLIOGRAPHY. ............................... 20
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تاریخ انتشار 1987