Beginning Database Design- P23 docx

... relational database model is very good.Object-relational database model —The object-relational database model includes minimal aspects of theobject 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 dependentslave databases, or even other master databases, capable of passing ... object-relational database model was created in answer to conflicting capabilities of relational and object database models —and alsoas a commercial competitor to the object database model. The object database...

Beginning Database Design- P5 docx

... within relational databasesthat some database engines allow and some do not. It is important to know that specialized objects existas options for expansion to a relational database model, as ... relationshipsKeys are used to identify and ultimately retrieve records from a database at a later date. Understanding KeysRelational databases use the terms index and key to indicate similar concepts. ... IndexesIndexes are not really part and parcel of the relational database model itself; however, indexes are soimportant to performance and overall database usability that they simply have to be introduced...

Beginning Database Design- P11 docx

... databases, surrogate keys are possibly more important interms 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.173Understanding Data Warehouse Database Modeling12_574906 ... warehouse database modeling. How can a data warehouse database model be constructed?How to Build a Data Warehouse Database ModelNow you know how to build star schemas for data warehouse database...

Beginning Database Design- P13 docx

... 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 andproduct will ultimately be produced.Some database modeling and design tools allow generation of table scripts into different database engines.The tool used for database ... mismatches(orphaned records). A database is an information repository. Poor application programming or poor database use produces problematic data. Highly normalized database models can help ensure...

Beginning Database Design ppt

... guilty.Mishandling Keywords and CategoriesA 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 immediate problem ... the type of database problems we are considering, the processing can mostly be separated into:Entering, editing, or otherwise maintaining data.•Extracting information from the database based...

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beginning database design 2006

... 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 writtenintentionally to be non -database specific, ... Building Fast-Performing Database Models 193The Needs of Different Database Models 194Factors Affecting OLTP Database Model Tuning 194Factors Affecting Client-Server Database Model Tuning 195Factors ... employee.Figure 1-4: The hierarchical database model.Network Database ModelThe network database model is essentially a refinement of the hierarchical database model. The networkmodel allows...

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Beginning Database Design- P1 potx

... 7Hierarchical Database Model 8Network Database Model 8Relational Database Model 9Relational Database Management System 11The History of the Relational Database Model 11Object Database Model ... Model 12Object-Relational Database Model 14Examining the Types of Databases 14Transactional Databases 15Decision Support Databases 15Hybrid Databases 16Understanding Database Model Design 16Defining ... Relational Database Modeling 1Chapter 1: Database Modeling Past and Present 3Grasping the Concept of a Database 4Understanding a Database Model 5What Is an Application? 5The Evolution of Database...

Beginning Database Design- P2 ppsx

... 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 methodsGrasping the Concept of a Database A database is a collection of information— preferably related information and preferably organized. A database ... 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 writtenintentionally to be non -database specific,...

Beginning Database Design- P3 doc

... for you.06_574906 ch02.qxd 10/28/05 11:36 PM Page 23databases. 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-relational database models❑ ... models❑ Why different database models evolved❑ The relational database model is the best all round option available❑ Database design depends on applications❑ Database types❑ Database design objectives...

Beginning Database Design- P4 ppsx

... multiple types of databases, using different database engines, perhaps even including legacy databases, and really any type of database that can be catered for withwhichever database is being ... Legacy DatabasesConverting legacy databases can often be the most difficult of tasks. Sometimes the databases are partiallyinaccessible or difficult to access at best. Sometimes the databases ... which areessentially database links from one database to another. The link is passed through a specialized driver,which allows the controlling database to talk to another database. Typically,...

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