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Part 1 Basic introduction to database systems: the entity-relationship model; the relational model. Part 2 Relational queries: relational algebra and calculus; SQL - the query language; query-by-example (QBE). Part 3 Data storage and indexing: storing data - disks and files; file organizations and indexes; tree-structured indexing; hash-based indexing. Part 4 Query evaluation: external sorting; evaluation of relational operators; introduction to query optimization; a typical relational query optimizer. Part 5 Database design: schema refinement and normal forms; physical database design and tuning; security. Part 6 Transaction management: transaction management overview; concurrency control; crash recovery. Part 7 Advanced topics: parallel and distributed databases; object-database systems; Internet databases; decision support; data mining; deductive and active databases; additional topics; appendices -database design case study, the Internet shop, the minibase software.