Lecture Database management systems Chapter 4 Relational model

... by the two main types of databases: textual and relational Database management systems - Textual, relational and xml databases – page Flat file databases The flat file database can be considered ... following types of database can meet your needs? A relational database A textual database Please click on the answer of your choice Database management systems -...

Ngày tải lên: 31/03/2014, 20:20

... with a relational database SQL is more than simply a query language; it is a database sub-language and is becoming the standard interface to relational and non -relational database management systems ... packages, SQL/ DS and DB2, on this language SQL was adopted as an industry standard in 1986 (SQL- 86) Since then there has been three more standards, SQL- 89, SQL2...

Ngày tải lên: 31/03/2014, 20:20

... 3 04 Chapter 11 3 ,4 6,2 9 ,4 8,7 5,6 3,1 3 ,4 2,6 4, 9 7,8 5,6 1,3 Input file 2 PASS 1-page runs PASS 2,3 4, 7 1,3 4, 6 8,9 5,6 2-page runs PASS 2,3 4, 4 1,2 6,7 3,5 8,9 4- page runs PASS 1,2 2,3 3 ,4 ... illustrated in Figure 11.5 3 ,4 2,3 6,2 4, 4 9 ,4 8,7 6,7 3 ,4 6,2 9 ,4 8,7 1st output run 8,9 Input file 5,6 1,2 3,5 3,1 Figure 11 .4 2nd output run Buffer pool with B =4...

Ngày tải lên: 08/08/2014, 18:22

... used to manipulate relational databases The Relational Database Concept • Proposed by Dr Codd in 1970 • The basis for the relational database management system (RDBMS) • The relational model contains ... defined and established in an ad-hoc manner ~ Croswell, 1991 Relational Database Management System - a database system made up of files with data elements in two-dimen...

Ngày tải lên: 17/03/2014, 00:20

... working full time on project 0% 0% to 25% 15% to 60% 50% to 100% 100% Titles Project coordinator Project lead Project coordinator Project lead Project expeditor Project manager Project manager Program ... Cordes Nancy Brown Project Project Project Project Project Project Strong Matrix, Weak Matrix, and Balanced Matrix Strong Matrix In a strong matrix organization the pr...

Ngày tải lên: 24/12/2013, 12:16

...    Chapter 1: Chapter 2: Chapter 3: Chapter 4: Chapter 5: Chapter 6: Chapter 7: Chapter 8: Chapter 9: Chapter 10: Introduction Modules and hierarchical structure Fundamental concepts Structural ... mux 4- to-1 40 Example: 2-to -4 decoder 41 Example: Full adder 1-bit t1 t2 t3 Full adder 1-bit Full adder 1-bit Or < student write code!> 42 Example: 4- bit ripple c...

Ngày tải lên: 07/03/2014, 14:20

... know that an instance of a 'technical document' can have a title and subject Database management systems - Using a database for document retrieval - page 10 Metadata search We can implement an indexed ... Integration with applications and workflow systems Database management systems - Using a database for document retrieval - page 13 Information portals...

Ngày tải lên: 31/03/2014, 20:20

... everything in the database Database management systems - Using a database for document management - page Using a database for management There are advantages to using systems that manage both document ... same database System Document Meta Data Document Documents Database Using a database for management It is often easier to create a syste...

Ngày tải lên: 31/03/2014, 20:20

... Objectives At the end of this lesson, you will: • understand the functionalities offered by CDS/ISIS, a textual DBMS; • understand the technical work needed by developers to implement these functionalities; ... understanding of the concepts covered in this lesson Good luck! Exercise What is CDS/ISIS? A set of tools for relational database management A textual...

Ngày tải lên: 31/03/2014, 20:20

... N Rao, 2nd Ed 44 Fig 4. 35 A geometric model created following the sequence of features as Box → Hole → Shell CAD/CAM Principles and Applications by P N Rao, 2nd Ed 45 Fig 4. 36 A geometric model ... Applications by P N Rao, 2nd Ed 42 Fig 4. 33 The final solid CAD/CAM Principles and Applications by P N Rao, 2nd Ed 43 Fig 4. 34 The model tree of the part showing the modelling pr...

Ngày tải lên: 08/04/2014, 10:34

... System Support for Software Fault Tolerance in Highly Available Database Management Systems by Mark Paul Sullivan Abstract Today, software errors are the leading cause of outages in fault ... differences in the risk to data in main CHAPTER INTRODUCTION memory and on disk 1.3 Existing Approaches to Software Fault Tolerance Current strategies for reduci...

Ngày tải lên: 28/04/2014, 13:32

... 2[1 ,4, 7,10-tetraaza -4 , 7-bis(carboxymethyl )-1 0-( 2-hydroxypropyl)cyc lododecyl]acetic acid, gadolinium salt (Gd[HP-DO3A]) and 2-( 1 ,4, 7,10-tetraaza -4 , 7bis(carboxymethyl )-1 0-( [N-carboxymethyl)-N- ( 4- cyclohexylphenyl)carbamoyl]me ... administration within hours, and are subsequently emitted into the aquatic © 2008 by Taylor & Francis Group, LLC 1 04 Fate of...

Ngày tải lên: 18/06/2014, 16:20

... § 4A -40 2(b) Official Comment to U.C.C § 4A -40 2 Id U.C.C § 4A -40 2(e) Turner, Negotiating Wire Transfer Agreements, 27 U.C.C § 4A-501(a) U.C.C §§ 4A-202(b) and 4A-2 04( a) U.C.C §§ 4A-202(f) and 4A-2 04( b) ... deducting them from the amount of the payment order issued by the executing bank If that is done, the amount of the payment order accepted by the beneficiary’s...

Ngày tải lên: 02/07/2014, 16:21