Beginning Database Design- P14 pot

... consists of what is added to the database and then removed from the database after a period of time. Transactional information is removed from a database to ensure that the database simply doesn’t get ... the OLTP database, thus not causing performance problems with the OLTP database. Establishing Company Operations Company operations have already been established when analyzing th...

Ngày tải lên: 03/07/2014, 01:20

... 7 Hierarchical Database Model 8 Network Database Model 8 Relational Database Model 9 Relational Database Management System 11 The History of the Relational Database Model 11 Object Database Model ... Model 12 Object-Relational Database Model 14 Examining the Types of Databases 14 Transactional Databases 15 Decision Support Databases 15 Hybrid Databases 16 Understanding Database...

Ngày tải lên: 03/07/2014, 01:20

... relational database model, and the object database model. In addition, a brief description covered star schemas. This chapter delves deeply into the details of the database warehouse database model. Expanding ... the Object Model Many modern relational databases are, in fact, object-relational databases. An object-relational database is by definition a relational database allowing...

Ngày tải lên: 03/07/2014, 01:20

... with respect to database modeling. Database performance is the most important factor as far as any database or database model is concerned. If performance is not acceptable, your database model ... survival needs of the different database model types. Factors Affecting OLTP Database Model Tuning An OLTP database services the Internet. The primary characteristics of OLTP datab...

Ngày tải lên: 03/07/2014, 01:20

... ❑ The database model is the backbone of any application that uses data of any kind. That data is most likely stored in some kind of database. That database is likely to be a relational database ... top for this particular database model. Figure 10-25: The online auction house OLTP database model, 3NF, partially denormalized. The only obvious issue still with the database model a...

Ngày tải lên: 03/07/2014, 01:20

... far more likely to cause a performance problem in an OLTP database, rather than in a data warehouse database. This is because an OLTP database has high concurrency. High concurrency is large ... warehouse database models. The next chapter goes a stage further into the case study, examining advanced application of business rules to a database model, such as field check constraints, d...

Ngày tải lên: 03/07/2014, 01:20

... building process. When you build a database, as opposed to just the database model, you create the database itself. During the database- creation process, implementing the database model, you might want ... Data Warehouse Database Model In short, there is nothing that you would want to attach to a data warehouse database model in the form of database model embedded coding, actin...

Ngày tải lên: 03/07/2014, 01:20

... brands, 125–126 structure change, 127 database block, 407 database concept, 4–5 database event, 27, 418 database model application, 3, 5–6 decision support databases, 15–16, 407 defined, 3, 407 design importance, ... handled by object database model, 13 database model, 5–6 defined, 3, 404 dependence, minimizing to accommodate changes, 19 as latest evolution of database modeling...

Ngày tải lên: 03/07/2014, 01:20

... 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