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Produktbeschreibungen
Kurzbeschreibung
Nowadays, newly developed software packages are often obsolete already at the time of their introduction. Object-oriented software development is a possible—if not the only—solution to this dilemma: applications are modeled as software objects that describe the properties and the behavior of real-world entities. Such objects are encapsulated, in that they hide—behind a publicly known interface—the complexity of their internal data structures and behaviors. This enables objects to be used in a wide range of program packages without needing to know the details of their internal implementation. Linking object-oriented modeled applications with a database places special demands on a database management system and development environment when the usual performance and semantics losses are to be avoided. This book provides a detailed description of the object model of the Caché postrelational database. In addition, it guides the reader step-by-step through the development of postrelational applications. The accompanying CD-ROM contains the complete associated software: InterSystems Caché™ 4.0 Single-User© 1997-2000 InterSystems Corporation. All rights reserved. Microsoft® Visual Basic® 6 Working Model Edition© 1997-1999 Microsoft Corporation. All rights reserved. Microsoft® Internet Explorer® 5.5 Service Pack 1© 1995-2000 Microsoft Corporation. All rights reserved. The use of this licensed software is governed by an end user license agreement contained in the software. System requirements PC with Intel CPU (Pentium or better), CD-ROM drive, Windows 95/98/Me or Windows NT/2000, 64 MB main memory (128 MB recommended), 100 MB free disk space.
-- Dieser Text bezieht sich auf eine vergriffene oder nicht verfügbare Ausgabe dieses Titels.
Synopsis
Nowadays, newly developed software packages are often obsolete already at the time of their introduction. Object-oriented software development is a possible - if not the only - solution to this dilemma: applications are modeled as software objects that describe the properties and the behavior of real-world entities. Such objects are encapsulated, in that they hide - behind a publicly known interface - the complexity of their internal data structures and behaviors. This enables objects to be used in a wide range of program packages without needing to know the details of their internal implementation. Linking object-oriented modeled applications with a database places special demands on a database management system and development environment when the usual performance and semantics losses are to be avoided. This book provides a detailed description of the object model of the Cache postrelational database. This second, revised and expanded edition includes the many new features of Cache 5. There is a comprehensive description of the new Cache Studio with its improvements for developing and debugging applications as well as a whole new chapter about XML and SOAP based Web Services.The chapters about Java, ActiveX and the SQL manager have undergone a complete revision. The accompanying CD-ROM contains the complete associated software as well as a searchable PDF version of the book. System requirements include: PC with Intel CPU (Pentium or better), Windows 95, 98, ME, NT 4.0 (SP4, 5 or 6), 2000 (SP2) or XP, 128 MB main memory, 100 MB free disk space, CD-ROM drive.
In diesem Buch
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Einleitungssatz
Because you are reading this book, we assume you are interested in object-oriented application development in general and the Caché post-relational database from InterSystems in particular. Lesen Sie die erste Seite
Buchdeckel | Copyright | Inhaltsverzeichnis | Auszug | Stichwortverzeichnis | Rückseite
Because you are reading this book, we assume you are interested in object-oriented application development in general and the Caché post-relational database from InterSystems in particular. Lesen Sie die erste Seite
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2 von 2 Kunden fanden die folgende Rezension hilfreich
Format:Gebundene Ausgabe
This book is mainly a summary of the Caché elements and keywords - fairly the same as in the Caché html documentation. What the book lacks are proper examples. Caché is an object-oriented layer over old, procedural MUMPS, but the few examples in the book are mainly examples of the old MUMPS syntax (like a C++ book with all examples in plain C).
Two examples:
1. It describes that arguments of methods can be called either by value or by reference (p. 43), but it describes neither how a by-ref argument is defined (ByRef), nor how a method with by-ref arguments is called (with a dot). It is, however, described for old procedures (p. 138).
2. It describes that the DATATYPE %Date has a CLASSMETHOD (= static method in C#/C++) LogicalToDisplay (p. 36), but it does not describe what its argument is and how it is called. When calling a classmethod on a class you need to use the ##class() macro, but that's not described until page 171. Apparently, in case of a datatype like %Date, Caché creates wrappers for each property of that type (with the property name as prefix) and those are the ones to be called.
The thing with Caché is that it is fairly illogical and that the compiler agrees with nearly everything, so you can't get to business without proper examples. We bought this book hoping to get more examples than the Caché documentation provides, but alas, not this book. I rate this book 1 star, since it is quite expensive, while the contents are very, very meager.
Having this said, this is the only book available about Caché, and is also on the cd-rom as a searchable pdf. So, if youre not familiar with MUMPS globals either, it will probably hold some interesting information for you.
Two examples:
1. It describes that arguments of methods can be called either by value or by reference (p. 43), but it describes neither how a by-ref argument is defined (ByRef), nor how a method with by-ref arguments is called (with a dot). It is, however, described for old procedures (p. 138).
2. It describes that the DATATYPE %Date has a CLASSMETHOD (= static method in C#/C++) LogicalToDisplay (p. 36), but it does not describe what its argument is and how it is called. When calling a classmethod on a class you need to use the ##class() macro, but that's not described until page 171. Apparently, in case of a datatype like %Date, Caché creates wrappers for each property of that type (with the property name as prefix) and those are the ones to be called.
The thing with Caché is that it is fairly illogical and that the compiler agrees with nearly everything, so you can't get to business without proper examples. We bought this book hoping to get more examples than the Caché documentation provides, but alas, not this book. I rate this book 1 star, since it is quite expensive, while the contents are very, very meager.
Having this said, this is the only book available about Caché, and is also on the cd-rom as a searchable pdf. So, if youre not familiar with MUMPS globals either, it will probably hold some interesting information for you.
Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)
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7 Rezensionen
20 von 20 Kunden fanden die folgende Rezension hilfreich
Typical Database Review
21. Juni 2002
Format:Gebundene Ausgabe
Unfortunately, as with most books in this genre (OODB), the examples and explanations are limited to very simple designs. Furthermore, even the small amount of information dedicated to the design explanations is not enough to wet the appetite for even the most inexperienced individuals.
Removing the 'install' chapter and adding a chapter to dissect a simple 'Address' database with embedded lists of phones, addresses, emails, relationships, and more would go a LONG way. It is disappointing that the authors took the typical beginners approach to a subject that many relational database bigots are dying to beat up on. By not showing a direct comparison to a relational design (function by function, attribute by attribute) they have left InterSystems with little to demonstrate to their potential customers why Cache is a powerful alternative to the status quo.
Shame... Could have been such a terrific book and demonstrative example of how and why OODBs will eventaully rule the real world. Until then we will have to wait for the sequel and hope that it can address the shortcomings of this book.
13 von 13 Kunden fanden die folgende Rezension hilfreich
Too little information for such a large product
25. Mai 2003
Format:Gebundene Ausgabe
I have been studying this book for over a year,
and though I have gotten to feel like I know my way around a Cache system, only been working with it a year (MUMPS too for that matter), there is too much information, Undocumented (WOLF KOELING<SP?> will agree that Intersystems offers not to divulge. The book hits all the basics. Devices, servers, clients, GUI tools, $ZU hell, CSP, but with 15 pages to use per section it has to try and describe it, thats not quite enough. ALl in all its helpful, though, my advice is to ditch the book and read the newsgroup. People are very willing to help there.
and though I have gotten to feel like I know my way around a Cache system, only been working with it a year (MUMPS too for that matter), there is too much information, Undocumented (WOLF KOELING<SP?> will agree that Intersystems offers not to divulge. The book hits all the basics. Devices, servers, clients, GUI tools, $ZU hell, CSP, but with 15 pages to use per section it has to try and describe it, thats not quite enough. ALl in all its helpful, though, my advice is to ditch the book and read the newsgroup. People are very willing to help there.
22 von 26 Kunden fanden die folgende Rezension hilfreich
Very useful, ...and a bit too pretty
24. Januar 2002
Format:Gebundene Ausgabe
Intersystems' Caché Postrelational Database is a relatively little known but very powerful & extremely scalable database engine, that has very few -if any- serious competitors in that features/price/performance group, especially after Intersystem changed their licensing policy recently.
The book gives detailed information about Caché's way of handling all major database functions, explains in a nice manner how to get it up & running ( at least on Windows this is actually so easy that it's almost not necessary to waste many words about it), provides a good introduction into Caché's specific as well as general object-oriented programming but stays a bit short on webapplications and information/assistance about errors & error-codes. It almost appears that the authors had a deadline to meet, and finished the web-part a bit too fast.
However, this sounds worse than it really is: Caché's online tutorial and documentation fill this gap, so to start, to learn more and to have a very nice, very compact language reference in your bag or next to your keyboard, this book is probably the best thing to have, especially in conjunction with the online materials.
The authors always keep their focus on what's necessary, it's easy to understand without simplifying the subject. In good Springer-Verlag manner it's slightly overpriced, but its size, layout and paper is very nice; too pretty almost: You certainly don't want to write notes into it, so you might end up with lots of Post-Its between the pages.
Unlike most other programming languages and databases this book prooves that you don't need 12 different 800-pages manuals, tutorials, references etc to accomplish one thing. In my opinion, besides the performance and ability to easily integrate with almost all other languages and platforms, this is one of the best aspects of Intersystems Caché.
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