
Conceptual data model
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Acquiring information systems specifications from natural language description is presented as a problem class that requires a different treatment of semantics when compared with other applied NL systems such as database and operating system interfaces. Within this problem class, the specific task of obtaining explicit conceptual data models from natural language text or dialogue is being investigated. The knowledge brought to bear on this task is classified into syntactic, semantic and systems analysis knowledge.
8p
buncha_1
08-05-2013
48
2
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In chapter 3, we follow the traditional approach of concentrating on the database structures and constraints during conceptual database design. The design of application programs is typically covered in software engineering courses. this chapter also present the modeling concepts of the Entity-Relationship (ER) model, which is a popular high-level conceptual data model.
38p
kiepnaybinhyen_04
15-12-2015
38
1
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Power Designer là 1 công cụ thiết kế CSDL. Với Power Designer bạn có thể : Thiết kế Conceptual Data model (CDM) bằng sơ đồ thực thể kết hợp Phát sinh Physical Data Model (PDM) tương ứng trên một DBMS được chọn. Phát sinh kích bản tạo CSDL trên một DBMS đích. Phát sinh ràng buột toàn vẹn tham chiếu (referential integrity triggers) nếu chúng được hổ trợ bởi CSDL đích. Cho phép hiệu chỉnh và in các model.
37p
hoangvietmk07071990
02-10-2010
385
89
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Contents at a Glance Introduction Part 1: Introduction to Analysis Services 1 Introduction to OLAP and Its Role in Business Intelligence 2 Multidimensional Space 3 Client/Server Architecture and Multidimensional Databases: An Overview Part 2: Creating Multidimensional Models 4 Conceptual Data Model 5 Dimensions in the Conceptual Model 6 Cubes and Multidimensional Analysis
889p
trasua_123
29-12-2012
66
16
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(bq) part 2 book "essentials of systems analysis and design" has contents: designing the human interface, designing databases, systems implementation and operation, structuring system requirements - conceptual data modeling.
230p
bautroibinhyen27
11-05-2017
27
1
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The objective of W3C is to transform the current Web into a Semantic Web to reuse the previous system. Many previous systems were built based on the ER model, so the upgradation and transformation of the ER model into ontology in order to reduce cost is really necessary. There are various studies aiming at transforming from ER and EER model into ontology; however, the studies have not still mentioned the transforming from the temporal databases into OWL ontology. Therefore, this paper proposes the rules for transforming the temporal components in TimeER model into OWL.
20p
thuyliebe
05-10-2018
17
0
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The objective of W3C is to transform the current Web into a Semantic Web to reuse the previous system. Many previous systems were built based on the ER model, so the upgradation and transformation of the ER model into ontology in order to reduce cost is really necessary.
20p
viconandoyle2711
29-08-2019
11
0
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.Advance Praise for Pricing, Risk, and Performance Measurement in Practice “The book represents a fresh and innovative departure from ‘traditional’ approaches to modelling of securities data. Subsequently, it also presents much more flexible ways to analyze and process the data. Even if you are not involved with re-architecting an organization’s master data handling, there are numerous ideas, principles, and nuggets that make it a worthwhile read.” –Dr.
398p
camchuong_1
04-12-2012
72
15
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CHAPTER 3 ■ THE ENTITY DATA MODEL INSIDE AND OUT The Designer is the tool that allows you to work with the EDM and provides the functionality developers need to create, modify, and update the EDM. The Designer consists of several components to assist you in designing and editing your conceptual model. Figure 3-2 shows the different components, including the following: • • • • Designer surface: A visual surface for creating and modifying the conceptual model. Mapping Details window: The location where mappings are created or modified. The window is discussed later in the chapter.
26p
tengteng17
03-01-2012
50
2
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(bq) part 1 book "fundamentals of database systems" has contents: introduction to databases, database system concepts and architecture, the relational data model and relational database constraints, conceptual modeling and database design, database programming techniques,...and other contents.
527p
bautroibinhyen20
06-03-2017
26
2
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Temporal Databases presents about What is temporal DB? Applications of temporal db; valid time temporal data model; time normalization; temporal query language; conceptual design and logical design and somethings else.
90p
cocacola_10
08-12-2015
34
1
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In chapter 3, we follow the traditional approach of concentrating on the database structures and constraints during conceptual database design. The design of application programs is typically covered in software engineering courses. this chapter also present the modeling concepts of the Entity-Relationship (ER) model, which is a popular high-level conceptual data model.
8p
kiepnaybinhyen_02
29-12-2015
25
1
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After completing this chapter, students will be able to: Remaining activities/steps in building conceptual data model, logical database design, purpose of normalization, data redundancy and update anomalies, functional dependencies.
33p
thuongdanguyetan03
18-04-2020
8
0
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This research was conducted to test the model of strategic human resource management as a competitive advantage in the construction industry specially to identify factors related to achieving competitive advantage in this industry. The empirical data were drawn from 174 construction companies in Indonesia using questionnaire method. Structural Equation Modeling techniques was used to analyze the conceptualized relationship model.
10p
tozontozon
25-04-2020
2
0
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This chapter presents the following content: More of an interactive demonstration than an animation, demonstrate conceptual execution model of Type II nested queries, type II nested queries are important for solving problems involving difference operator, problems with difference are not common,...
29p
nanhankhuoctai9
23-06-2020
3
0
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Mô hình ER được dùng để xây dựng mô hình dữ liệu ý niệm (Conceptual data modeling) nhằm biểu diễn cấu trúc và các ràng buộc của CSDL. Mô hình ER như một công cụ để trao đổi ý tưởng giữa nhà thiết kế và người dùng cuối trong giai đoạn phân tích. Nó độc lập với DBMS và quá trình thi công database.
75p
thienthanoze
31-10-2010
570
165
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In July 2008 Microsoft released the first version of the ADO.NET Entity Framework as part of the Visual Studio 2008 Service Pack 1 as well as the .NET Framework 3.5 Service Pack 1. At the time, Microsoft LINQ (Language Integrated Query) and LINQ to SQL had been out for a while and were gaining a lot of attention.
281p
tengteng6
26-11-2011
155
58
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Mô hình quan hệ – thực thể ER (Entity Relationship Model – ER Model) được dùng để thiết kế CSDL ở mức khái niệm (Conceptual data modeling) Biểu diễn trừu tượng cấu trúc của CSDL Mô hình ER như 1 công cụ để trao đổi ý tưởng giữa nhà thiết kế và người dùng cuối trong giai đoạn phân tích. Nó độc lập với DBMS và quá trình hiện thực database. 4 .Sơ đồ quan hệ – thực thể Sơ đồ quan hệ thực thể (entity relationship diagram - ERD) là biểu diễn hình ảnh của quan hệ thực thể Ba phần tử...
44p
muathu_102
28-01-2013
202
41
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Microsoft’s ADO.NET Entity Framework, known widely as EF, introduced out-of-thebox Object Relational Mapping to .NET and Visual Studio. Central to Entity Framework was the Entity Data Model, a conceptual model of your application domain that maps back to the schema of your database. This conceptual model describes the core classes in your application. Entity Framework uses this conceptual model while querying from the database, creating objects from that data and then persisting changes back to the database....
192p
kenichi_kudo
11-11-2012
158
40
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Power Designer là 1 công cụ thiết kế CSD. Với Power Designer bạn có thể: Thiết kế Conceptual Data model bằng so đồ thực thể kết hợp
37p
hnguyenaa
23-01-2012
264
29
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