... 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...
... within relational databases
that some database engines allow and some do not. It is important to know that specialized objects exist
as options for expansion to a relational database model, as ... relationships
Keys are used to identify and ultimately retrieve records from a database at a later date.
Understanding Keys
Relational databases use the terms index and key to indicate simila...
... 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...
... 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...
... 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...
... 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...
... 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...
... 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...
... of a database model
❑ The evolution of database modeling
❑ The hierarchical and network database models
❑ The relational database model
❑ The object and object-relational database models
❑ Database ... Database design objectives
❑ Database design methods
Grasping the Concept of a Database
A database is a collection of information— preferably related information and prefera...
... for you.
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databases. The OLTP database is the source database because the OLTP database is the database
where all the transactional information in the ... differences between a database, a database model, and an application
❑ The hierarchical and network database models
❑ The relational database model
❑ The object and object-relationa...