Download Database Design for Smarties : Using UML for Data Modeling by Robert J. Muller PDF

By Robert J. Muller

Even if development a relational, object-relational, or object-oriented database, database builders are more and more counting on an object-oriented layout technique because the top technique to meet consumer wishes and function standards. This publication teaches you ways to exploit the Unified Modeling Language-the reliable usual of the article administration Group-to boost and enforce the very best layout in your database.Inside, the writer leads you step-by-step throughout the layout technique, from standards research to schema new release. you are going to learn how to convey stakeholder wishes in UML use situations and actor diagrams, to translate UML entities into database parts, and to rework the ensuing layout into relational, object-relational, and object-oriented schemas for all significant DBMS items. * Teaches you every little thing you must recognize to layout, construct, and try databases utilizing an OO model.* indicates you the way to take advantage of UML, the authorised common for database layout in keeping with OO principles.* Explains the way to rework your layout right into a conceptual schema for relational, object-relational, and object-oriented DBMSs.* deals sensible examples of layout for Oracle, SQL Server, Sybase, Informix, item layout, POET, and different database administration systems.* Focuses seriously on re-using layout styles for max productiveness and teaches you the way to certify accomplished designs for re-use.

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Extra info for Database Design for Smarties : Using UML for Data Modeling (The Morgan Kaufmann Series in Data Management Systems)

Sample text

Record Data Types A record data type (or a structured type in the ISO SQL3 standard) is a table definition, perhaps accompanied by methods or functions. Once you define the type, you can then create objects of the type, or you can define tables of such objects. OR systems do not typically have any access control over the members of the record, so programs can access the data attributes of the object directly. I therefore distinguish these types from encapsulated data types, which conceal the data behind a firewall of methods or functions.

These are the base types of the data model. An OR data model adds extended or user-defined types to the base types of the relational model. There are three variations on extended types: ƒ Subtypes or distinct data types ƒ Record data types ƒ Encapsulated data types - 34 - Subtypes A subtype is a base type with a specific restriction. Standard SQL supports a combination of size and logical restrictions. 99. 99, making it a nonnegative monetary amount. However, you can put these restrictions only on a column definition.

Infuriating, because Date and Darwen bring a caustic and arrogant sense of British humour to the book, which trashes virtually every aspect of the OR world. Illuminating, because they work through some serious problems with OR "theory," if you can call it that, from a relational instead of 00 perspective. Aggravating, because there is very little chance of the ORDBMS vendors learning anything from the book, to their and our loss. I do not present the detailed manifesto here because I don't believe the system they demand delivers the benefits of object-oriented integration with relational technology and because I seriously doubt that system will ever become a working ORDBMS.

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