Beginning Database Design- P21 pot

... guilty. Mishandling Keywords and Categories A common problem in database design is the failure to properly deal with keywords and categories. Many database applications involve data that is categorized ... exists that needs to be understood before any design of a database should proceed further. As you have seen in the previous chapters, databases are often set up to solve one immedia...

Ngày tải lên: 28/03/2014, 09:20

... Microsoft Access database, dBase database, Oracle Database, MySQL, Ingres, or any relational database — it doesn’t matter. All of the coding in this book is written intentionally to be non -database specific, ... employee. Figure 1-4: The hierarchical database model. Network Database Model The network database model is essentially a refinement of the hierarchical database model...

Ngày tải lên: 10/04/2014, 09:05

... Entity-Relationship Model of a Database Let us begin our discussion of database design by looking at an informal database model called the entity-relationship model . This model of a relational database provides ... Component of Access SQL 100 Part III: Database Architecture 123 7. Database System Architecture 124 7.1 Why Program? 124 7.2 Database Systems 125 7.3 Databas...

Ngày tải lên: 17/03/2014, 19:20

... environmental influences as well as the interaction between the participating field variables. In particular the potential damage, that is a result of environmental load- ing, and the increase of moisture transport ... 10 2 where evolution strategies typically require up to 10 4 or even more function evaluations. The potential for parallelization and the associated strategies are determined by...

Ngày tải lên: 01/07/2014, 10:43

Ngày tải lên: 11/09/2012, 15:49

... relational databases. Most databases in use today are relational, and the focus in this book will be to design a relational database. Before we can actually get into relational databases, we ... students in database classes and to help database practitioners in understanding how to arrive at a definite, clear database design using an entity relationship (ER) diagram. In designing a d...

Ngày tải lên: 22/10/2013, 10:15

... ROADMAP Accelerated SQL Server 2008 Beginning SQL Server 2008 for Developers Beginning SQL Queries Beginning Database Design Pro SQL Server 2008 Relational Database Design and Implementation www.apress.com SOURCE CODE ONLINE Companion ... Optimization Pro SQL Server 2000 Database Design US $59.99 Shelve in Databases/SQL Server User level: Intermediate–Advanced Davidson Pro SQL...

Ngày tải lên: 29/10/2013, 15:15

... four editions of a book on database design. Louis’s primary areas of interest are database architecture and coding in T-SQL, and he has experience designing many databases and writing thousands ... 2005 Database Design and Optimization (Apress, 2006), and Database Benchmarking: Practical Methods for Oracle & SQL Server (Rampant, 2007). Kevin contributes to SQL Server Magazine an...

Ngày tải lên: 29/10/2013, 15:15

... use schemas to group objects in the database with common themes or even common owners. All objects on the database server can be addressed by knowing the database they reside in and the schema ... too confusing). Multiple files make up a database. CHAPTER 1 ■ INTRODUCTION TO DATABASE CONCEPTS10 8662Ch01.qxp 7/28/08 3:37 PM Page 10 A thorough database design process will undergo...

Ngày tải lên: 08/11/2013, 21:15

... allow you to uniquely identify every row in your database. One thing of interest here is that what might be considered a natural key in your database is often not actually a natural key in the ... driver’s license number of a person. In the example database, this is a number that every person has (or may need before inclusion in our database, perhaps). However, the value of the driver’s...

Ngày tải lên: 08/11/2013, 21:15