Advanced SQL: 1999 - Understanding Object-Relational and by Jim Melton

February 23, 2017 | Sql | By admin | 0 Comments

By Jim Melton

Complex SQL:1999 - figuring out Object-Relational and different complicated good points is the practitioner's guide to the standard's complex positive aspects. it isn't a re-presentation of the traditional, yet particularly an authoritative, in-depth advisor to its functional software. Like its spouse, SQL:1999 - figuring out Relational Language elements, which defined the standard's uncomplicated beneficial properties, this ebook will aid you make your functions either potent and standard-compliant.This convenient reference has a modular structure so that you can discover particular themes conveniently. it's both beneficial to these upgrading from previous models of SQL and people with out earlier adventure. Written by way of the standard's wonderful editor, complicated SQL:1999 will whole your wisdom and aid your talents like no different ebook can. * Focuses completely at the concerns that subject to programmers who're connecting purposes to databases.* information SQL:1999's item amenities, together with dependent user-defined forms, typed tables, user-defined workouts, and regimen invocation.* Examines amenities new to SQL, together with these in relation to online analytical processing (OLAP), administration of exterior info (SQL/MED), and Java support.* Covers the continuing improvement of XML support.* contains appendices that conceal the SQL:1999 annexes, a SQL:1999 instance utilizing UDTs, prestige codes, and valuable details at the standardization approach.

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Extra info for Advanced SQL: 1999 - Understanding Object-Relational and Other Advanced Features (The Morgan Kaufmann Series in Data Management Systems)

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5 Major Characteristics of Structured UDTs 33 Whichever way you like to think about these things, let's agree thatmfor the duration of this book, at leastmwe'll use the terminology that SQL:1999 uses (in part because it's compatible with Java's terminology, but mostly because this book is about SQL:1999). Therefore, a type's behaviors (or, if you prefer, the behaviors of instances of that type) are supplied by the invocation of one or more routines, either directly by an application program or indirectly by some other routine, which may or may not be directly associated with that type.

The type of an attribute can also be specified to be a distinct type. In addition, any attribute can be specified 5 For reasons that are difficult to explain, the SOL standard refers to observer and mutator methods using the phrases observer function and mutator function. This disparity of nomenclature extends to a very few other sorts of methods. I attempt to be more consistent in this volume, but I may sometimes slip up and use the standards' terminology. 6 Structured types defined using Java are mapped directly to Java objects and thus do not suffer from this limitation.

2 and spend the bulk of the chapter discussing in detail), it also provides a more limited variant called distinct types. The discussion of distinct types is relatively short, since the subject was covered in detail in Volume I of this book; in fact, I'm including it only for the sake of completeness. Most of this chapter's space, and energy, is spent on structured types. 1 Distinct Types A distinct type is a data type that is based on a single built-in data type, such as INTEGER, but whose values cannot be directly mixed in operations with that built-in type or with other distinct types based on that built-in type.

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