Information Modeling the EXPRESS WayOxford University Press, 06/01/1994 - 416 páginas Information modeling technology--the open representation of information for database and other computing applications--has grown significantly in recent years as the need for universal systems of information coding has steadily increased. EXPRESS is a particularly successful ISO International Standard language family for object-flavored information modeling. This cogent introduction to EXPRESS provides numerous, detailed examples of the language family's applicability to a diverse range of endeavors, including mechanical engineering, petroleum exploration, stock exchange asset management, and the human genome project. The book also examines the history, practicalities, and implications of information modeling in general, and considers the vagaries of normal language that necessitate precise communication methods. This first-ever guide to information modeling and EXPRESS offers invaluable advice based on years of practical experience. It will be the introduction that students as well as information and data modeling professionals have been waiting for. |
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Página xi
... models 245 19.1 Schema level model 245 . 19.2 Entity level model 246 19.2.1 Role names and cardinalities 246 19.2.2 Constraints 247 19.2.3 Type modeling 247 19.2.4 Entity modeling 19.2.5 Inter - schema references 19.3 Complete and partial ...
... models 245 19.1 Schema level model 245 . 19.2 Entity level model 246 19.2.1 Role names and cardinalities 246 19.2.2 Constraints 247 19.2.3 Type modeling 247 19.2.4 Entity modeling 19.2.5 Inter - schema references 19.3 Complete and partial ...
Página xv
... entity - level model of some types ( Page 1 of 1 ) . 4.6 Partial entity - level model of the refined owner subtype tree ( Page 1 of 1 ) . 48 52 • 54 4.7 Base model ambiguity between car , model , and manufacturer . 55 4.8 Complete schema - ...
... entity - level model of some types ( Page 1 of 1 ) . 4.6 Partial entity - level model of the refined owner subtype tree ( Page 1 of 1 ) . 48 52 • 54 4.7 Base model ambiguity between car , model , and manufacturer . 55 4.8 Complete schema - ...
Página xvi
... full names 12.3 Full names and simple names 13.1 Repeat control logic • 17.1 Complete entity - level model of Example 20.1 ( Page 1 of 2 ) . 17.2 Complete entity - level model of Example 20.1 ( Page 2 of 2 ) . 18.1 Simple type symbols ...
... full names 12.3 Full names and simple names 13.1 Repeat control logic • 17.1 Complete entity - level model of Example 20.1 ( Page 1 of 2 ) . 17.2 Complete entity - level model of Example 20.1 ( Page 2 of 2 ) . 18.1 Simple type symbols ...
Página 14
... level where items can no longer be decomposed . The atomic level in ... model , but first we need to define the terminology that we will be using . Informa ... entity . Just as real world objects are instances of real world classes , we ...
... level where items can no longer be decomposed . The atomic level in ... model , but first we need to define the terminology that we will be using . Informa ... entity . Just as real world objects are instances of real world classes , we ...
Página 16
... levels of rigor which are called normal form . Suffice it to say here that ... all cars produced by that manufacturer . Each model also has a name , and this ... entity is a modeling construct that is 16 CHAPTER 2. MODELS AND REPRESENTATIONS.
... levels of rigor which are called normal form . Suffice it to say here that ... all cars produced by that manufacturer . Each model also has a name , and this ... entity is a modeling construct that is 16 CHAPTER 2. MODELS AND REPRESENTATIONS.
Índice
The EXPRESS Language | 121 |
EXPRESS example model | 280 |
Example model instance | 302 |
Interpreting supertype relationships | 309 |
Relationships and cardinality | 316 |
An EXPRESS Metamodel | 330 |
Resources | 354 |
Bibliography | 369 |
Index | 381 |
Outras edições - Ver tudo
Information Modeling: The EXPRESS Way Douglas A. Schenck,Peter R. Wilson,Peter Robert Wilson Pré-visualização limitada - 1994 |
Palavras e frases frequentes
ABSTRACT SUPERTYPE aggregate AggregateType algorithm Andor array ASIM attribute name attribute values attributes END_ENTITY binary BOOLEAN boolean datatype car_model Chapter characters CollectionType Complete entity-level model constants constraints context database datatype defined type definition described developed digits displayed document domain DomainRule END_FUNCTION END_LOCAL END_REPEAT END_SCHEMA END_TYPE entity declaration entity instance entity type entity value EntityRef enumeration enumeration type evaluated explicit attribute EXPRESS model EXPRESS specification EXPRESS-G ExpressName False Figure formal parameters fuel consumption function returns garage given graphical IDEF1X identifier imported information base information model inherited INTEGER interface inverse attribute Inverse cardinality language literate programming logical logical value made_by manufacturer meta-model object operand operator optional valued attributes owner procedure real world redeclaration reference referenced relationship line represent Return statement rules scope Shlaer-Mellor simple types Stmts STRING string literal subset SUBTYPE symbols things transfer unique Unknown Unknown Unknown upper bound variable
Passagens conhecidas
Página xxvii - When I use a word," Humpty Dumpty said, in rather a scornful tone, "it means just what I choose it to mean — neither more nor less." "The question is," said Alice, "whether you can make words mean so many different things.
Página 127 - The White Rabbit put on his spectacles. "Where shall I begin, please, your Majesty?" he asked. "Begin at the beginning," the King said gravely, "and go on till you come to the end; then stop.
Página 253 - It must not be; there is no power in Venice Can alter a decree established: 'Twill be recorded for a precedent, And many an error by the same example Will rush into the state; it cannot be.
Página 162 - How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?
Página 220 - If language is not correct, then what is said is not what is meant; if what is said is not what is meant, then what ought to be done remains undone...
Página 6 - Factual information (as measurements or statistics) used as a basis for reasoning, discussion, or calculation.
Página 165 - Oh, what a tangled web we weave when first we practice to deceive!
Página 316 - He saw them, in that fashion, as disponibles, saw them subject to the chances, the complications of existence, and saw them vividly, but then had to find for them the right relations, those that would most bring them out; to imagine, to invent and select and piece together the situations most useful and...
Página 211 - ALL ANIMALS ARE EQUAL BUT SOME ANIMALS ARE MORE EQUAL THAN OTHERS...
Página 5 - Examinations are formidable even to the best prepared ; for the greatest fool may ask more than the wisest man can answer.
Referências a este livro
CAAD Futures 1997: Proceedings of the 7th International Conference on ... Richard Junge Visualização de excertos - 1997 |
Fuzzy Sets in Engineering Design and Configuration Hans-Jürgen Sebastian,Erik K. Antonsson Visualização de excertos - 1996 |