Lecture Database management systems Chapter 7 Normalization for relational databases

... presented in [ 474 ] Another paper that considers concurrency control issues in the context of recovery is [4 27] Algorithms for building indexes without stopping the DBMS are presented in [ 477 ] and [6] ... concurrency control is introduced in [395] Transaction management issues for real-time database systems are discussed in [1, 11, 311, 322, 326, 3 87] A locking approach for high-co...

Ngày tải lên: 08/08/2014, 18:22

... criteria for "good" base relations? Informal Design Guidelines for Relational Databases (2)  We first discuss informal guidelines for good relational design  Then we discuss formal concepts of functional ... the process of 2NF normalization Figure 10. 10 Normalizing into 2NF and 3NF Note: The above figure is now called Figure 10. 10 in Edition Figure 10. 11 Normalizati...

Ngày tải lên: 12/05/2014, 11:55

... 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

... 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

... computing with wired and wireless communications, GIS, GPS, and remote sensing technologies (Karimi and Hammad, 2004) GIS lies at the heart of most mobile information resource systems For example, it ... lightweight, reliable, and affordable field computing devices; (3) more accurate and affordable GPS receivers; and (4) wireless communications (ESRI, 2004) MOBILE GIS APP...

Ngày tải lên: 11/08/2014, 13:22

... 7. 1 RELATIVE IMPORTANCE OF THE DIRECT OZONE B REACTION AND THE OZONE DECOMPOSITION REACTION* In Section 5.2 and Section 5.3, the kinetic regimes of the ozone decomposition reaction and any ozone B ... values, in Ozone in Water and Wastewater, Proceedings of 11th Ozone World Congress, Vol 2, S-1 7- 1 19–125, San Francisco, CA, 1993 22 Legube, B et al., Effect of oz...

Ngày tải lên: 11/08/2014, 17:22

... designed to operate in temperatures up to 300°F (1 48. 88 C), whereas plastic blades are limited to air temperatures between 160°F and 180 °F (71 .11°C, 82 .22°C) Air-cooled heat exchangers can be found ... V-202B Ti 202A Feed Tank V-202A Figure 7. 24 Heat Exchanger System 184 Pump 80 ºF Heat Exchangers and Systems side of the first exchanger at 80 °F (26.66°C) and exits the shell...

Ngày tải lên: 20/08/2013, 10:39

... Summary Many times a project is not able to produce everything that is needed to complete the project When this occurs the project manager becomes the 194 Preparing for the Project Management Professional ... of the project if the supplier delivers the project early or if the project performance exceeds the agreed upon specifications In this situation the risk of meeting the co...

Ngày tải lên: 24/12/2013, 12:16

... 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

... 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

... 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

... examining the mobility of enteric © 2008 by Taylor & Francis Group, LLC 170 Fate of Pharmaceuticals in the Environment and in Water Treatment Systems bacteria in soil indicated to 6% of the inoculated ... 168 Fate of Pharmaceuticals in the Environment and in Water Treatment Systems Recently, antibiotics, including the veterinary antibiot...

Ngày tải lên: 18/06/2014, 16:20