Advanced Database Technology and Design phần 6 ppt

... solution (as 268 Advanced Database Technology and Design 2. We adopt a unified three-dimensional workspace for space (two dimensions) and time (one dimension) features. • Synchronization and presentation: ... discuss the issues related to retrieval and presentation of IMDs, which are broader than those of monomedia objects. 266 Advanced Database Technology and Desig...

Ngày tải lên: 08/08/2014, 18:21

... involved in 232 Advanced Database Technology and Design Conceptual design UML notation Standard design ODL Implementation design OODBMS Figure 7.3 Design process of an object-oriented database schema. For ... Database Standard: ODMG-93, Release 1.2, San Francisco, CA: Morgan Kaufmann, 19 96. [ 16] POET/ODMG Programmers Guide 4.0, POET Software Corporation, 19 96. 24...

Ngày tải lên: 08/08/2014, 18:21

... to remedy the lock and log file problems [24]. 16 Advanced Database Technology and Design 1 Evolution and Trends of Database Technology Adoración de Miguel, Mario Piattini, and Paloma Martínez 1.1 ... 1 96 6.5.3 Encapsulation 197 6. 5.4 Polymorphism 197 6. 5.5 Inheritance 197 6. 6 ORDBMS: A Closer Look at Characteristics in the Physical Implementation 198 viii Advan...

Ngày tải lên: 08/08/2014, 18:21

... and the fourth the column number. 50 Advanced Database Technology and Design If Sally is processed before Tom, the constraint is never violated, no rule actions are executed, and both Sally and ... B., E. B. Swanson, and G. E. Tompkins, Characteristics of Applications Soft- ware Maintenance, Comm. ACM, Vol. 21, 1978, pp. 466 471. 88 Advanced Database Technology and...

Ngày tải lên: 08/08/2014, 18:21

... Work_age(Peter) 108 Advanced Database Technology and Design [ 56] Fraternali, P., and S. Paraboschi, A Review of Repairing Techniques for Integrity Maintenance, Intl. Work. on Rules in Database Systems ... Extending Database Technology (EDBT 96) , Avignon, France, 19 96, pp. 535549. [68 ] Farré, C., E. Teniente, and T. Urpí, Query Containment as a View Updating Prob-...

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... single interval. 164 Advanced Database Technology and Design • i1 DURING i2 is true if and only if s2 ≤ s1 and e2 ≥ e1 are both true. 9 • i1 STARTS i2 is true if and only if s1 = s2 and e1 ≤ e2 are ... its single operand and returns another such set. The result in both cases can be regarded as a particular canonical form for the original set. 160 Advanced Database T...

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... the bandwidth for the downlink communication (from servers to clients) is much greater than the bandwidth 3 36 Advanced Database Technology and Design 11 Secure Database Systems Elena Ferrari and ... wireless network in the same way as working 344 Advanced Database Technology and Design [ 36] Özsu, M. T., and P. Valduriez, Principles of Distributed Database System...

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... able to handle nonstandard data so far kept in specialized data stores. 4 06 Advanced Database Technology and Design Application DBMS Figure 12.1 Nonstandard application using a DBMS and file-based ... the problem of design and development of component DBMSs and their appli- cations. Because the type of systems considered here are only in the process of 424 Advanced Data...

Ngày tải lên: 08/08/2014, 18:21

... X → Y and W ⊇ Z, then X,W → Y,Z. • R3 (transitivity): If X → Y and Y → Z, then X → Z. • R4 (pseudo-transitivity): If X → Y and Y,W → Z, then X,W → Z. 4 56 Advanced Database Technology and Design from ... the coherence and readability of the dis- course. For example, [ 26] proposes a method to aggregate atomic sentences 462 Advanced Database Technology and Design...

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... 8285 Actors defined, 261 62 spatiotemporal composition of, 261 65 Administration DBA, 360 61 delegation, 361 joint, 362 object curator, 361 object-owner, 361 policies, 360 62 policy taxonomy, 363 tools, ... durability (ACID), 16, 292 Atoms, 94 Authorization models for active DBMSs, 369 70 comparative analysis, 37072 Iris, 368 69 for object DBMSs, 366 69 Orion, 367 68 for rela...

Ngày tải lên: 08/08/2014, 18:21