Fundamentals of Database systems 3th edition PHẦN 9 pptx

... expressed by: 99 status(X,’gold’) :- 98 status(X,’gold’) AND 98 Miles(X,Y) AND Y>45000 1 Page 720 of 893 Time series are sequences of events; each event may be a given fixed type of a transaction. ... branches of database technology that are going to play a significant role over the next decade: data warehousing and data mining. 1 Page 746 of 893 computes the foll...

Ngày tải lên: 08/08/2014, 18:22

... Antonellis, V. [ 199 3] Relational Database Theory, Benjamin/Cummings, 199 3. Atzeni, P., Mecca, G., and Merialdo, P. [ 199 7] "To Weave the Web," in VLDB [ 199 7]. B Bachman, C. [ 196 9] "Data ... [ 199 0] "A Study of Three Alternative Workstation Server Architectures for Object-Oriented Database Systems, " in VLDB [ 199 0]. Dhawan, C. [ 199 7] Mobile...

Ngày tải lên: 08/08/2014, 18:22

... Database Systems 3 79 13.1 Evolution and Current Trends of Database Technology 380 13.2 The Informix Universal Server 381 13.3 Object-Relational Features of Oracle 8 395 13.4 An Overview of ... Types of a Degree Higher Than Two 88 4.8 Data Abstraction and Knowledge Representation Concepts 90 4 .9 Summary 93 Review Questions 93 Exercises 94 Selected Bibliography 9...

Ngày tải lên: 08/08/2014, 18:22

... key includes records with the following Part# values: 23 69, 3760, 4 692 , 4871, 56 59, 1821, 1074, 7115, 1620, 2428, 394 3, 4750, 697 5, 498 1, 92 08. The file uses eight buckets, numbered 0 to 7. Each ... Instantiation is the inverse of classification and refers to the generation and specific examination of 1 Page 90 of 893 Specialization is the process of classifying a clas...

Ngày tải lên: 08/08/2014, 18:22

... number of courses taken by all students named ‘John Smith’ in Winter 199 9 (i.e., Quarter = ‘W 99 ). b. Produce a list of textbooks (include Course#, Book_ISBN, Book_Title) for courses offered ... relational databases, users were less concerned about migrating their database applications from other types of database systems for example, network or hierarchical systems to rela...

Ngày tải lên: 08/08/2014, 18:22

... 10: Examples of Relational Database Management Systems: Oracle and Microsoft Access 10.1 Relational Database Management Systems: A Historical Perspective 10.2 The Basic Structure of the Oracle ... calculus. Ullman ( 198 8) describes a formal proof of the equivalence of relational algebra with the safe expressions of tuple and domain relational calculus. Abiteboul et al. (...

Ngày tải lên: 08/08/2014, 18:22

... ( 199 6). Other general references to object-oriented databases were given in the bibliographic notes to Chapter 11. The O2 system is described in Deux et al. ( 199 1) and Bancilhon et al. ( 199 2) ... ( 198 7) and Wilkinson et al. ( 199 0) discuss IRIS, an object-oriented DBMS developed at Hewlett-Packard laboratories. Maier et al. ( 198 6) and Butterworth et al. ( 199 1) describe the d...

Ngày tải lên: 08/08/2014, 18:22

... into a set of dependencies, and vice versa. Note 11 1 Page 444 of 893 here. Ullman ( 198 8), Maier ( 198 3), and Atzeni and De Antonellis ( 199 3) contain many of the theorems and proofs concerning ... set of inference rules. We defined the concepts of closure and minimal cover of a set of 1 Page 437 of 893 • Database system implementation and tuning (Phase 6):...

Ngày tải lên: 08/08/2014, 18:22

... DeWitt et al. ( 198 4), Bratbergsengen ( 198 4), Shapiro ( 198 6), Kitsuregawa et al. ( 198 9), and Blakeley and Martin ( 199 0), 1 Page 546 of 893 Chapter 19: Transaction Processing Concepts 19. 1 Introduction ... 19. 2 Transaction and System Concepts 19. 3 Desirable Properties of Transactions 19. 4 Schedules and Recoverability 19. 5 Serializability of Schedules 19....

Ngày tải lên: 08/08/2014, 18:22

... 199 9-03-01. b. On 199 8-07-30,08:31:00, the salary of Smith was corrected to show that it should have been entered as 31000 (instead of 30000 as shown), effective on 199 8-06-01. c. On 199 9-03-18,08:31:00, ... effective 199 9-06-01. f. On 199 9-05-05,13:07:33, the database was changed to indicate the rehiring of Brown, with the same department and supervisor but with salary 3...

Ngày tải lên: 08/08/2014, 18:22