'Er modeling' diaporamas de présentation

DBMS Module 1

DBMS Module 1. ER Modeling. Relational model basics. Data is viewed as existing in two dimensional tables known as relations A relation (table) consists of unique attributes (columns) and tuples (rows) Tuples are unique

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System Modeling

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Chapter 4: Enhanced Entity-Relationship (EER) Modeling

Chapter 4: Enhanced Entity-Relationship (EER) Modeling. Data Modeling and Database Design. Remember!. Presentation Layer ER Diagram ? C ontains hashes and oval Design-specific ER Diagram (Coarse-granularity) ? Uses (min, max) notation ? Maps deletion rules

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REA analysis and E-R diagramming

REA analysis and E-R diagramming. 12/8/ 2011. What are we hoping to achieve?. Tool for designing a database system to meet the needs of the organization REA modeling is a method of analyzing and thinking about the system

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Week 10 October 31

Week 10 October 31. Extended ERD Data Normalization. Problems with ER modeling. Fan traps - Pathway between two entities is ambiguous Chasm traps - Pathway does not exist between certain entity occurrences Inheritance - An entity receives its attributes from a class of attributes.

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Chapter 12.3+

Information Systems Database Management. Chapter 12.3+. Database Management Systems. Database: A structured set of data. Database Management System: (DBMS) A combination of software and data, including: Physical database : a collection of files that contain the data.

475 views • 33 slides

Chapter 12.3+

Information Systems Database Management. Chapter 12.3+. Database Management Systems. Database: A structured set of data. Database Management System: (DBMS) A combination of software and data, including: Physical database : a collection of files that contain the data.

522 views • 33 slides

Hencie Consulting Services hencie

Hencie Consulting Services http://www.hencie.com. Building a Knowledge Share System Using Oracle Designer SCOUG 2000 Conference. By Murli Manickam Sameer Jejurkar. Agenda. Knowledge Share System (KSS) Introduction to Oracle Designer HKSS Architecture and components

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Data modeling using E/R diagramming

Data modeling using E/R diagramming. Why analyze data? Notation for E/R Entities with attributes Types of attributes Relationships Cardinality History / things evolve Total participation Weak entities Steen Jensen, autumn 2013. Why analyze data?.

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Mai Nguyen BUS 550, Spring 2013 Dr. Minder Chen

Conceptual data modeling for bioinformatics. Erich Bornberg -Bauer and Norman W. Paton. (2002). Briefings in Bioinoformatics . Vol. 3. No. 2. 166-180. Mai Nguyen BUS 550, Spring 2013 Dr. Minder Chen. Bioinformatics. Data. Information Processing and System. Biology (Source).

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Dr. Haider A. Haddad Class 3

Dr. Haider A. Haddad Class 3. Lecture 2 Database Design. Database Design Objectives Discuss the general process and goals of database design Define user views and explain their function To identify entities and their relationships.

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Information-oriented approaches

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Chapter 12.3

Chapter 12.3. Information Systems Database Management. Database Management Systems. Database: A structured set of data. Database management system: (DBMS) A combination of software and data, including a physical database, a database engine, and a database schema.

389 views • 14 slides

Chapter 12

Chapter 12. Information Systems. Database Management Systems. Database A structured set of data Database management system (DBMS) A combination of software and data, including a physical database, a database engine, and a database schema

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ER Modeling Example Hachim Haddouti

ER Modeling Example Hachim Haddouti. Entities and Attributes. See Ch2 p.157. Example 2: Problem/Application. Providing customer invoice details of Maroc Telecom on the web . An Excerpt of raw data. 100|MAROCTelekom|0.2|98|20000430|EPLUS09800001M

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Some future trends in requirements engineering

Some future trends in requirements engineering. Colin Potts Georgia Tech. Domain modeling Model a generic system or system template, not a specific system Specify new systems by customizing the template. Formal specification Use mathematically formal language to specify parts of a system

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Solutions to exercises from Lecture 4

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Introduction

Introduction to modeling. Introduction. Where are we?. Course overview. Introduces modeling as a discipline within Computer Science and Engineering, and some of the the most important modeling paradigms of the last decades Core primitives and principles Relational Modeling

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Best DATA STAGE Online Training In India,UK, USA, Canada

Data Stage Online Training At Smart Mind Online Training . Data Period was pared right down to be as unobtrusive as you can. There isn't any "client" software to download, quite few required metadata fields, as well as a file system that builds on formats the user should already be comfortable with. End users can link to Data Stage Online Training mapped drive on Windows, Linux or Mac machines, and Data Stage can be reachable by means of a web interface. The tool enables integration of processing high quantities of the information and the data.

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what is HTTP? - the underlying communication protocol used by the www

what is HTTP? - the underlying communication protocol used by the www - common HTTP headers?. what is HTML? - a mark-up vocabulary how is HTML used? - to format documents used on the www. what is JavaScript? - a scripting language implemented in browsers

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