Introduction to Database and Knowledge-base SystemsWorld Scientific, 1992 - 328 pagine This book provides a comprehensive yet concise coverage of the concepts and technology of database systems and their evolution into knowledge-bases. The traditional material on database systems at senior undergraduate level is covered. An understanding of concepts is emphasized avoiding extremes in formalism or detail.Rather than be restricted to a single example used over an entire book, a variety of examples are used. These enable the reader to understand the basic abstractions which underlie description of many practical situations.A major portion of the book concerns database system technology with focus on the relational model. Various topics are discussed in detail, preparing the ground for more advanced work. |
Sommario
Preliminaries and Overview | 1 |
The Relational Model | 23 |
Relational Database Languages and Systems | 67 |
Hierarchical and Network Models | 101 |
Physical Data Organization | 131 |
Elements of Database Design | 177 |
Protection and Preservation of Databases | 197 |
Concurrency Control | 229 |
80 | 250 |
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algorithm attributes B-tree B+ tree basic block bucket concept concurrency control consider contains corresponding CURRENT_BALANCE CUSTOMER_NAME data item data model data organization database design database management system database systems Datalog DBMS deadlock defined deletion discussed disk distributed database systems employee entity types entity-relationship entity-relationship model entry evaluation example execution extendible hashing fragments functional dependencies hash function hashing scheme implementation indicate insertion integrity constraints involved key values language Linear hashing lock logic NAME network model node normal form object-oriented obtain operations performance pointer predicate programming Prolog query READ record type recovery recursive relation scheme relational algebra relational model relationship representation retrieval rules SALARY SALE SAVINGS_BALANCE secondary storage semantics sequence sequential serializable shown in Figure specific stored strategies structure STUDENT technique timestamp tion transaction tree tuples update WRITE