Fundamentals of Database systems 3th edition PHẦN 1 potx

... Files 11 5 5.7 Files of Unordered Records (Heap Files) 11 7 5.8 Files of Ordered Records (Sorted Files) 11 8 5.9 Hashing Techniques 12 0 5 .10 Other Primary File Organizations 12 6 5 .11 Summary 12 6 ... Organizations 10 0 5 .1 Introduction 10 1 5.2 Secondary Storage Devices 10 3 5.3 Parallelizing Disk Access Using RAID Technology 10 7 5.4 Buffering of Blocks 11 1...

Ngày tải lên: 08/08/2014, 18:22

... appear with a 1 . The DIVISION operator can be expressed as a sequence of p, x, and - operations as follows: T 1 ã p Y (R) T 2 ã p Y ((S x T 1 ) - R) T ã T 1 - T 2 1 Page 18 8 of 893 In ... relational databases, users were less concerned about migrating their database applications from other types of database systems for example, network or hierarchical s...

Ngày tải lên: 08/08/2014, 18:22

... designing a relational database and an object database? 12 .12 . Describe the steps of the algorithm for object database design by EER-to-OO mapping. 12 .13 . What is the objective of CORBA? Why is it ... language. 13 .3 Object-Relational Features of Oracle 8 13 .3 .1 Some Examples of Object-Relational Features of Oracle 13 .3.2 Managing Large Objects and Other Storag...

Ngày tải lên: 08/08/2014, 18:22

... et al. (19 84), Bratbergsengen (19 84), Shapiro (19 86), Kitsuregawa et al. (19 89), and Blakeley and Martin (19 90), 1 Page 546 of 893 Chapter 19 : Transaction Processing Concepts 19 .1 Introduction ... techniques, and Chapter 21 presents an overview of recovery techniques. 19 .1 Introduction to Transaction Processing 19 .1. 1 Single-User Versus Multiuser Systems 19 .1...

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... Structures, and Hashing 411 13 .1 Introduction 412 13 .2 Secondary Storage Devices 13 .3 Bufferingof Blocks 4 21 13.4 Placing File Records on Disk 13 .5 Operations on Files 427 13 .6 Filesof Unordered Records ... illustrate our discussion. Section 1. 3 describes some of the main characteristics of database systems, and Sections 1. 4 and 1. 5 categorize the types of person...

Ngày tải lên: 08/08/2014, 18:22

... 1 Page 12 2 of 893 Default buffer (cache) size 1, 024 Kbytes 1, 024 Kbytes Spindle Speed 10 ,000 RPM 10 , 016 RPM Nonrecoverable error rate 1 per bits read 1 per bits read Seek errors (SCSI) 1 ... hash values start with 11 1 in Figure 05 .13 overflows, the two new buckets need a directory with global depth d = 4, because the two buckets are now labeled 11 10 and 11 11,...

Ngày tải lên: 08/08/2014, 18:22

... Chapter 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 ... relationships. 10 .8 Features and Functionality of Access 10 .8 .1 Forms 10 .8.2 Reports 10 .8.3 Macros and Access Basic 10 .8.4 Additional Features This section pr...

Ngày tải lên: 08/08/2014, 18:22

... or all of Section 15 .3, Section 15 .4, and Section 15 .5. 15 .1 Algorithms for Relational Database Schema Design 15 .1. 1 Relation Decomposition and Insufficiency of Normal Forms 15 .1. 2 Decomposition ... Organizations 16 .2 The Database Design Process 16 .3 Physical Database Design in Relational Databases 16 .4 An Overview of Database Tuning in Relational Sys...

Ngày tải lên: 08/08/2014, 18:22

... Section 22 .1 and Section 22.2. 22 .1 Introduction to Database Security Issues 22 .1. 1 Types of Security 22 .1. 2 Database Security and the DBA 22 .1. 3 Access Protection, User Accounts, and Database ... assuming day granularity, the period [19 93-08 -15 , 19 98 -11 -20] represents the set of all days from August 15 , 19 93 until November 20, 19 98, inclusive (Note...

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... supports a subset of DEL functionality (no constraints, no recursion, limited object capabilities, etc.) on top of commercial SQL systems. 1 Page 714 of 893 A (1) = D (1) D A (0) = ... relations. For example, we say S 1 1 S 2 , if relation P k (1) is a subset of relation P k(2) for all k, 1 1 k 1 m. Fixpoint theory was first developed in the field of recur...

Ngày tải lên: 08/08/2014, 18:22