Beginning Database Design- P11 docx

... databases, surrogate keys are possibly more important in terms of gluing together different data, even from different databases, perhaps even different database engines. Sometimes different databases ... data warehouse database simply cannot cope using a standard OLTP database relational database model. Something else is needed for a data warehouse. 173 Understanding Data Warehouse D...

Ngày tải lên: 03/07/2014, 01:20

... usually dependent on the database model. Analysis is planning. It is doubly important to plan for a database model. The reason is that the database model forms the basis of all database- driven applications, ... better a database model and product will ultimately be produced. Some database modeling and design tools allow generation of table scripts into different database engine...

Ngày tải lên: 03/07/2014, 01:20

... relational database model is very good. Object-relational database model —The object-relational database model includes minimal aspects of the object database model into the relational database ... from a primary or master database, out to a number of other copies of the master database. Those copies can be fully dependent slave databases, or even other master databases, capable o...

Ngày tải lên: 03/07/2014, 01:20

... generation of object-relational database applications, including multime- dia and web-based applications, often make extensive use of user-defined func- tions(UDFs) within the database. Incorporating ... different sizes. In our experiments, for the sake of simplicity, we place the first tile at the beginning of a track. The disk parameters are: The transfer time is 0.05 ms , the access t...

Ngày tải lên: 24/12/2013, 02:18

... 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, ... Building Fast-Performing Database Models 193 The Needs of Different Database Models 194 Factors Affecting OLTP Database Model Tuning 194 Factors Affecting Client-Server...

Ngày tải lên: 10/04/2014, 09:05