tailieunhanh - Responsible persons: Susanne Bleisch

For the last 5 years, the Gamma database machine project has focused on issues associated with the design and implementation of highly parallel database machines. In a number of ways, the design of Gamma is based on what we learned from our earlier database machine DIRECT [DEWI79]. While DIRECT demonstrated that paral- lelism could be successfully applied to processing database operations, it had a number of serious design deficiencies that made scaling of the architecture to 100s of processors impossible; primarily the use of shared memory and centralized control for the execution of its parallel algorithms [BITT83] | Databases Geographic Information Technology Training Alliance GITTA presents Databases Responsible persons Susanne Bleisch http - Version from 1 Databases Content 1. Introduction to Database Systems. 5 Definition of Terms. 6 Data versus Information. 7 The Components of an Information System. 8 Characteristics of the Database Approach. 9 Concurrent Use. 10 Structured and Described Data. 11 Separation of Data and Applications. 12 Data Integrity. 13 Transactions . 14 Data Persistence . 15 Data Views . 16 Example Applications. 17 Management of Bank Accounts. 18 Timetable Informationsystem . 19 Library Catalogue . 20 Central Geodata Warehouse . 22 Exercise . 24 Advantages and Disadvantages. 25 Comparison DBS versus file based . 26 Advantages of a DBMS. 27 Disadvantages of a DBMS. 28 Tasks. 29 Summary. 30 Recommended Reading. 31 Glossary . 32 Bibliography . 34 2. Database Systems Concepts and Architectures . 35 Database Models Schemes and Instances . 36 Database Models . 37 Database Schemes and Database Instances . 39 Comparison of Spatial Models and Database Models . 41 DBMS-Architecture and Data Independence . 42 Three-Schemes Architecture . 43 Data Independence . 45 Database Languages and Database Interfaces . 46 Database Languages . 47 Database Interfaces . 48 User Interfaces . 49 Tasks . 52 Exercise Data Independence . 53 Summary . 54 Recommended Reading . 55 Glossary . 56 http - Version from 2 Databases Bibliography. 57 3. The relational database model. 58 Concept of the relational model. 59 Data organization in a relational data model. 60 Definitionen. 61 Transforming an ERM to a relational database scheme. 64 ERM concepts . 65 Rule 1 . 66 Rule 2 . 67 .