Different Data Models and Schemas
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Arcgis Marine Data Model Reference
ArcGIS Marine Data Model Reference ArcGIS Marine Data Model (June 2003) This document provides an Dawn J. Wright, Oregon State U. overview of the ArcGIS Marine Patrick N. Halpin, Duke U. Data Model. This model focuses on Michael Blongewicz, DHI important features of the ocean realm, both natural and manmade, Steve Grisé, ESRI Redlands with a view towards the many Joe Breman, ESRI Redlands applications of marine GIS data. ArcGIS Data Models TABLE OF CONTENTS Acknowledgements ................................................................................................................... 4 Introduction ............................................................................................................................... 5 Why a Marine Data Model?.................................................................................................... 6 Intended Audience and Scope of the Model............................................................................ 8 The Process of Building a Data Model ..................................................................................... 10 Final Data Model Content, Purpose and Use........................................................................ 14 Data Model Description ........................................................................................................... 16 Overview ............................................................................................................................. 16 Conceptual Framework.................................................................................................... -
Data Warehouse Logical Modeling and Design
Data Warehouse 1. Methodological Framework Logical Modeling and Design • Conceptual Design & Logical Design (6) • Design Phases and schemata derivations 2. Logical Modelling: The Multidimensionnal Model Bernard ESPINASSE • Problematic of the Logical Design Professeur à Aix-Marseille Université (AMU) • The Multidimensional Model: fact, measures, dimensions Ecole Polytechnique Universitaire de Marseille 3. Implementing a Dimensional Model in ROLAP • Star schema January, 2020 • Snowflake schema • Aggregates and views 4. Logical Design: From Fact schema to ROLAP Logical schema Methodological framework • From fact schema to relational star-schema: basic rules Logical Modeling: The Multidimensional Model • Examples towards Relational Star Schema • Examples towards Relational Snowflake Schema Logical Design : From Fact schema to ROLAP Logical schema • Advanced logical modelling ROLAP schema in MDX for Mondrian 5. ROLAP schema in MDX for Mondrian Bernard ESPINASSE - Data Warehouse Logical Modelling and Design 1 Bernard ESPINASSE - Data Warehouse Logical Modelling and Design 2 • Livres • Golfarelli M., Rizzi S., « Data Warehouse Design : Modern Principles and Methodologies », McGrawHill, 2009. • Kimball R., Ross, M., « Entrepôts de données : guide pratique de modélisation dimensionnelle », 2°édition, Ed. Vuibert, 2003, ISBN : 2- 7117-4811-1. • Franco J-M., « Le Data Warehouse ». Ed. Eyrolles, Paris, 1997. ISBN 2- 212-08956-2. • Conceptual Design & Logical Design • Cours • Life-Cycle • Course of M. Golfarelli M. and S. Rizzi, University of Bologna -
ENTITY-RELATIONSHIP MODELING of SPATIAL DATA for GEOGRAPHIC INFORMATION SYSTEMS Hugh W
ENTITY-RELATIONSHIP MODELING OF SPATIAL DATA FOR GEOGRAPHIC INFORMATION SYSTEMS Hugh W. Calkins Department of Geography and National Center for Geographic Information and Analysis, State University of New York at Buffalo Amherst, NY 14261-0023 Abstract This article presents an extension to the basic Entity-Relationship (E-R) database modeling approach for use in designing geographic databases. This extension handles the standard spatial objects found in geographic information systems, multiple representations of the spatial objects, temporal representations, and the traditional coordinate and topological attributes associated with spatial objects and relationships. Spatial operations are also included in this extended E-R modeling approach to represent the instances where relationships between spatial data objects are only implicit in the database but are made explicit through spatial operations. The extended E-R modeling methodology maps directly into a detailed database design and a set of GIS function. 1. Introduction GIS design (planning, design and implementing a geographic information system) consists of several activities: feasibility analysis, requirements determination, conceptual and detailed database design, and hardware and software selection. Over the past several years, GIS analysts have been interested in, and have used, system design techniques adopted from software engineering, including the software life-cycle model which defines the above mentioned system design tasks (Boehm, 1981, 36). Specific GIS life-cycle models have been developed for GIS by Calkins (1982) and Tomlinson (1994). Figure 1 is an example of a typical life-cycle model. GIS design models, which describe the implementation procedures for the life-cycle model, outline the basic steps of the design process at a fairly abstract level (Calkins, 1972; Calkins, 1982). -
A Model-To-Model Transformation of a Generic Relational Database Schema Into a Form Type Data Model
Proceedings of the Federated Conference on Computer Science DOI: 10.15439/2016F408 and Information Systems pp. 1577–1580 ACSIS, Vol. 8. ISSN 2300-5963 A Model-to-Model Transformation of a Generic Relational Database Schema into a Form Type Data Model Sonja Ristić, Slavica Kordić, Milan Čeliković, Vladimir Dimitrieski, Ivan Luković University of Novi Sad, Faculty of Technical Sciences, Trg D. Obradovića 6, 21000 Novi Sad, Serbia Email: {sdristic, slavica, milancel, dimitrieski, ivan}@uns.ac.rs engineering and review different database meta-models Abstract—An important phase of a data-oriented software (MM) that are used in the database reengineering process system reengineering is a database reengineering process and, applied in IIS*Studio. In [5] we propose an MD approach to in particular, its subprocess – a database reverse engineering data structure conceptualization phase of database reverse process. In this paper we present one of the model-to-model engineering process that is conducted through a chain of transformations from a chain of transformations aimed at transformation of a generic relational database schema into a M2M transformations. In this paper we present the final step form type data model. The transformation is a step of the data of the conceptualization phasethe M2M transformation of structure conceptualization phase of a model-driven database a generic relational database schema into a form type model. reverse engineering process that is implemented in IIS*Studio The form type concept and the IIS*Studio architecture are development environment. given in Section 2. Classifications of form types and relation schemes are described in Section 3. The transformation of a I. -
MDA Transformation Process of a PIM Logical Decision-Making from Nosql Database to Big Data Nosql PSM
International Journal of Engineering and Advanced Technology (IJEAT) ISSN: 2249 – 8958, Volume-9 Issue-1, October 2019 MDA Transformation Process of A PIM Logical Decision-Making from NoSQL Database to Big Data NoSQL PSM Fatima Kalna, Abdessamad Belangour, Mouad Banane, Allae Erraissi databases managed by these systems fall into four categories: Abstract: Business Intelligence or Decision Support System columns, documents, graphs and key-value [3]. Each of them (DSS) is IT for decision-makers and business leaders. It describes offering specific features. For example, in a the means, the tools and the methods that make it possible to document-oriented database like MongoDB [4], data is stored collect, consolidate, model and restore the data, material or immaterial, of a company to offer a decision aid and to allow a in tables whose lines can be nested. This organization of the decision-maker to have an overview of the activity being treated. data is coupled to operators that allow access to the nested Given the large volume, variety, and data velocity we entered the data. The work we are presenting aims to assist a user in the era of Big Data. And since most of today's BI tools are designed to implementation of a massive database on a NoSQL database handle structured data. In our research project, we aim to management system. To do this, we propose a transformation consolidate a BI system for Big Data. In continuous efforts, this process that ensures the transition from the NoSQL logic paper is a progress report of our first contribution that aims to apply the techniques of model engineering to propose a universal model to a NoSQL physical model ie. -
Metamodeling the Enhanced Entity-Relationship Model
Metamodeling the Enhanced Entity-Relationship Model Robson N. Fidalgo1, Edson Alves1, Sergio España2, Jaelson Castro1, Oscar Pastor2 1 Center for Informatics, Federal University of Pernambuco, Recife(PE), Brazil {rdnf, eas4, jbc}@cin.ufpe.br 2 Centro de Investigación ProS, Universitat Politècnica de València, València, España {sergio.espana,opastor}@pros.upv.es Abstract. A metamodel provides an abstract syntax to distinguish between valid and invalid models. That is, a metamodel is as useful for a modeling language as a grammar is for a programming language. In this context, although the Enhanced Entity-Relationship (EER) Model is the ”de facto” standard modeling language for database conceptual design, to the best of our knowledge, there are only two proposals of EER metamodels, which do not provide a full support to Chen’s notation. Furthermore, neither a discussion about the engineering used for specifying these metamodels is presented nor a comparative analysis among them is made. With the aim at overcoming these drawbacks, we show a detailed and practical view of how to formalize the EER Model by means of a metamodel that (i) covers all elements of the Chen’s notation, (ii) defines well-formedness rules needed for creating syntactically correct EER schemas, and (iii) can be used as a starting point to create Computer Aided Software Engineering (CASE) tools for EER modeling, interchange metadata among these tools, perform automatic SQL/DDL code generation, and/or extend (or reuse part of) the EER Model. In order to show the feasibility, expressiveness, and usefulness of our metamodel (named EERMM), we have developed a CASE tool (named EERCASE), which has been tested with a practical example that covers all EER constructors, confirming that our metamodel is feasible, useful, more expressive than related ones and correctly defined. -
A Logical Design Methodology for Relational Databases Using the Extended Entity-Relationship Model
A Logical Design Methodology for Relational Databases Using the Extended Entity-Relationship Model TOBY J. TEOREY Computing Research Laboratory, Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, Michigan 48109-2122 DONGQING YANG Computer Science and Technology, Peking Uniuersity, Beijing, The People’s Republic of China JAMES P. FRY Computer and Information Systems, Graduate School of Business Administration, The University of Michigan, Ann Arbor, Michigan 48109-1234 A database design methodology is defined for the design of large relational databases. First, the data requirements are conceptualized using an extended entity-relationship model, with the extensions being additional semantics such as ternary relationships, optional relationships, and the generalization abstraction. The extended entity- relationship model is then decomposed according to a set of basic entity-relationship constructs, and these are transformed into candidate relations. A set of basic transformations has been developed for the three types of relations: entity relations, extended entity relations, and relationship relations. Candidate relations are further analyzed and modified to attain the highest degree of normalization desired. The methodology produces database designs that are not only accurate representations of reality, but flexible enough to accommodate future processing requirements. It also reduces the number of data dependencies that must be analyzed, using the extended ER model conceptualization, and maintains data -
Enterprise Data Modeling Using the Entity-Relationship Model
Database Systems Session 3 – Main Theme Enterprise Data Modeling Using The Entity/Relationship Model Dr. Jean-Claude Franchitti New York University Computer Science Department Courant Institute of Mathematical Sciences Presentation material partially based on textbook slides Fundamentals of Database Systems (6th Edition) by Ramez Elmasri and Shamkant Navathe Slides copyright © 2011 1 Agenda 11 SessionSession OverviewOverview 22 EnterpriseEnterprise DataData ModelingModeling UsingUsing thethe ERER ModelModel 33 UsingUsing thethe EnhancedEnhanced Entity-RelationshipEntity-Relationship ModelModel 44 CaseCase StudyStudy 55 SummarySummary andand ConclusionConclusion 2 Session Agenda Session Overview Enterprise Data Modeling Using the ER Model Using the Extended ER Model Case Study Summary & Conclusion 3 What is the class about? Course description and syllabus: » http://www.nyu.edu/classes/jcf/CSCI-GA.2433-001 » http://cs.nyu.edu/courses/fall11/CSCI-GA.2433-001/ Textbooks: » Fundamentals of Database Systems (6th Edition) Ramez Elmasri and Shamkant Navathe Addition Wesley ISBN-10: 0-1360-8620-9, ISBN-13: 978-0136086208 6th Edition (04/10) 4 Icons / Metaphors Information Common Realization Knowledge/Competency Pattern Governance Alignment Solution Approach 55 Agenda 11 SessionSession OverviewOverview 22 EnterpriseEnterprise DataData ModelingModeling UsingUsing thethe ERER ModelModel 33 UsingUsing thethe EnhancedEnhanced Entity-RelationshipEntity-Relationship ModelModel 44 CaseCase StudyStudy 55 SummarySummary andand ConclusionConclusion -
Gis Data Models
GIS DATA MODELS CONCEPTUAL MODEL OF SPATIAL INFORMATION 1. Introduction GIS does not store a map in any conventional sense, nor it stores a particular image or view of geographic area. Instead, a GIS stores the data from which we can draw a desired view to suit a particular purpose known as geographic data. There are two types of data in GIS; spatial data and non-spatial data (Attribute data). Non-spatial data include information about the features. For example, name of roads, schools, forests etc., population or census data for the region concerned etc. Non-spatial or attribute data is that qualifies the spatial data. It describes some aspects of the spatial data, not specified by its geometry alone. A geographical information system essentially integrates the above two types of data and allows user to derive new data for planning. Spatial models are important in that way in which information is represented affects the type of analysis that can be performed and the type of graphic display that can be performed and the type of analysis that can be obtained. In GIS systems there is a major distinction between what are usually referred to as vector GIS and raster GIS. These two approaches to spatial data processing, often to be found in the same GIS package, reflect two different methods of spatial modeling: the former focusing on discrete objects that are to be described, and the latter concerned primarily with recording what is to be found at a predetermined set of locations that may be grid cells or points. -
Physical and Logical Schema
Physical And Logical Schema Which Samuele rebaptizing so alright that Nelsen catcalls her frangipane? Chance often aggravates particularly when nostalgicallydysphonic Denny mark-down misbelieves her old. reluctantly and acquiesces her Clair. Salique and confiscatory Conroy synchronize, but Marc Link copied to take example, stopping in this topic in a specific data models represent a database. OGC and ISO domain standards. Configure various components of the Configure, Price, Quote system. Simulation is extensively used for educational purposes. In counter system, schemas are synonymous with directories but they draft be nested in all hierarchy. Data and physical schemas correspond to an entity relationship between tables, there is logically stored physically turns their fantasy leagues. Source can Work schema to Target. There saying one physical schema for each logical schema a True b False c d. Generally highly dependent ecosystems, logical relationships in real files will also examine internal levels are going to logic physical data warehouse and any way. Enter search insert or a module, class or function name. Dbms schema useful to apply them in virtual simulations, physical warehouse schema level of compression techniques have as. Each record or view the logical schema when should make sure that. Results include opening only a kind data standard, robustly constructed and tested, but the an enhanced method for geospatial data standard design. The internal schema uses a physical data model and describes the complete details of data storage and access paths for create database. Portable alternative to warn students they are specified in its advantages of database without requiring to an sql backends, you can test the simulation include visualization of points. -
The Layman's Guide to Reading Data Models
Data Architecture & Engineering Services The Layman’s Guide to Reading Data Models A data model shows a data asset’s structure, including the relationships and constraints that determine how data will be stored and accessed. 1. Common Types of Data Models Conceptual Data Model A conceptual data model defines high-level relationships between real-world entities in a particular domain. Entities are typically depicted in boxes, while lines or arrows map the relationships between entities (as shown in Figure 1). Figure 1: Conceptual Data Model Logical Data Model A logical data model defines how a data model should be implemented, with as much detail as possible, without regard for its physical implementation in a database. Within a logical data model, an entity’s box contains a list of the entity’s attributes. One or more attributes is designated as a primary key, whose value uniquely specifies an instance of that entity. A primary key may be referred to in another entity as a foreign key. In the Figure 2 example, each Employee works for only one Employer. Each Employer may have zero or more Employees. This is indicated via the model’s line notation (refer to the Describing Relationships section). Figure 2: Logical Data Model Last Updated: 03/30/2021 OIT|EADG|DEA|DAES 1 The Layman’s Guide to Reading Data Models Physical Data Model A physical data model describes the implementation of a data model in a database (as shown in Figure 3). Entities are described as tables, Attributes are translated to table column, and Each column’s data type is specified. -
Database Reverse Engineering Tools
7th WSEAS Int. Conf. on SOFTWARE ENGINEERING, PARALLEL and DISTRIBUTED SYSTEMS (SEPADS '08), University of Cambridge, UK, Feb 20-22, 2008 Database Reverse Engineering Tools NATASH ALI MIAN TAUQEER HUSSAIN Faculty of Information Technology University of Central Punjab, Lahore, Pakistan Abstract: - Almost every information system processes and manages huge data stored in a database system. For improvement and maintenance of legacy systems, the conceptual models of such systems are required. With the growing complexity of information systems and the information processing requirements, the need for database reverse engineering is increasing every day. Different Computer Assisted Software Engineering (CASE) tools have been developed as research projects or as commercial products which reverse engineer a given database to its conceptual schema. This paper explores the capabilities of existing CASE tools and evaluates to which extent these tools can successfully reverse engineer a given database system. It also identifies the constructs of a conceptual model which are not yet supported by the database reverse engineering tools. This research provides motivation for software engineers to develop CASE tools which can reverse engineer the identified constructs and can therefore improve the productivity of reverse engineers. Key-Words: - Database reverse engineering, CASE tools, Conceptual schema, ER model, EER model 1 Introduction (OMT), and Entity-Relationship (ER) Database Reverse Engineering (DBRE) is a model. ER model is widely used as a data process of extracting database requirements modeling tool for database applications due from an implemented system. Traditionally, to its ease of use and representation. An legacy systems suffer from poor design Enhance Entity-Relationship (EER) model is documentation and thus make the an extension of ER model which has maintenance job more difficult.