Download e-book for kindle: Beginning Database Design (Wrox Beginning Guides) by Gavin Powell

By Gavin Powell

ISBN-10: 0764574906

ISBN-13: 9780764574900

* the fitting reference for programmers, directors, or net designers who're new to database improvement and are doubtful as to easy methods to layout and constitution a database successfully* indicates easy methods to layout and enforce powerful, scalable databases on any of the key relational database administration platforms, together with entry, SQL Server, IBM DB2, MySQL, and Oracle* Covers all of the key database layout steps together with modeling, normalization, SQL, denormalization, object-modeling, facts warehousing, and function* presents lots of real-world examples and an entire beginning-to-end case examine of making a database that comes with the research and making plans, tables and knowledge buildings, company ideas, and necessities

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If you are interviewed as a contractor to sort out a problem like this, you might be faced with a Herculean task. ❑ Data integrity — Integrity is a set of rules in a database model, ensuring that data is not lost within the database, and that data is only destroyed when it should be. 17 Chapter 1 ❑ Support both planned queries and ad-hoc or unplanned queries — The fewer ad-hoc queries, the better, of course, and in some circumstances (such as very high-concurrency OLTP databases), ad-hoc queries might have to be banned altogether, or perhaps shifted to a more appropriate data warehouse platform.

The relational database model is best suited for retrieval of groups of data, but can also be used to access unique data items fairly efficiently. The object-relational database model was created in answer to conflicting capabilities of relational and object database models. Essentially, object database modeling capabilities are included in relational databases, but not the other way around. Many relational databases now allow binary object storage and limited object method coding capabilities, with varying degrees of success.

In computer jargon, an application is a piece of software that runs on a computer and performs a task. That task can be interactive and use a graphical user interface (GUI), and can execute reports requiring the click of a button and subsequent retrieval from a printer. Or it can be completely transparent to endusers. Transparency in computer jargon means that end-users see just the pretty boxes on their screens and not the inner workings of the database, such as the tables. From the perspective of database modeling, different application types can somewhat (if not completely) determine the requirements for the design of a database model.

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Beginning Database Design (Wrox Beginning Guides) by Gavin Powell

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