Intelligent database

Abstract: Data have become a highly valued asset for governments, industries and individuals, and the management of these data collections remains a critical technical challenge.. The challenges of managing terabytes and exabytes of data and expanding data management to include other data modalities while maintaining the fundamental tenets of database management (data independence, data integrity, data consistency, etc) are important issues for any organization today. Published as five volumes with over 4000 pages, the Encyclopedia of Database Systems provides easy access to important concepts relevant information on all aspects of very large databases, data management, and database systems, including areas of current interest and research results of historical significance.. This comprehensive reference contains 1,300 illustrated entries, organized alphabetically. Each entry presents basic terminology, concepts, methods and algorithms, key results to date, references to the literature, and cross-references to other entries. Topics for the Encyclopedia including areas of current interest as well as research results of historical significance were selected by a distinguished international advisory board and written by world class experts in the field. Encyclopedia of Database Systems is designed to meet the needs of researchers, professors, graduate and undergraduate students in computer science and engineering. Industry professionals such as database specialists and software developers will also benefit from this reference work.

Abstract: This book is the first of its kind and is produced as a result of the efforts by a consortium of database companies called the Object Database Management Group (ODMG). With this book, standards are defined for object management systems and this will be the foundational book for object-oriented database product.

Abstract: A "return on investment" digital database usage metering, billing, and security system includes a hardware device which is plugged into a computer system bus (or into a serial or other functionally adequate connector) and a software program system resident in the hardware device. One or more databases are encrypted and stored on a non-volatile mass storage device (e.g., an optical disk). A tamper-proof decrypting device and associated controller decrypts selected portions of the stored database and measures the quantity of information which is decrypted. This measured quantity information is communicated to a remote centralized billing facility and used to charge the user a fee based on database usage. A system may include a "self-destruct" feature which .disables system operation upon occurrence of a predetermined event unless the user implements an "antidote"--instructions for implementing the antidote being given to him by the database owner only if the user pays his bill. Absolute database security and billing based on database usage are thus provided in a system environment wherein all database access tasks are performed at the user's site. Moreover, a free market competitive environment is supported because literary property royalties can be calculated based on actual data use.

Abstract: A method assigns importance ranks to nodes in a linked database, such as any database of documents containing citations, the world wide web or any other hypermedia database. The rank assigned to a document is calculated from the ranks of documents citing it. In addition, the rank of a document is calculated from a constant representing the probability that a browser through the database will randomly jump to the document. The method is particularly useful in enhancing the performance of search engine results for hypermedia databases, such as the world wide web, whose documents have a large variation in quality.