Structured English Examples
|
|
- Oswin Mills
- 6 years ago
- Views:
Transcription
1 Logic Modeling Logic and timing are not represented on data flow diagrams or entity-relationship diagrams Processes contain logic - what happens under what conditions Logic is modeled per process Types of logic: sequence, conditions, iteration
2 Structured English Uses a subset of English Uses indentation similar to programming Uses process-type verbs like READ, WRITE, GENERATE, CHECK, PRINT Verbs and control words in CAPS Refers to the data coming in and out of the process No specific syntax rules
3 Structured English Examples READ Inventory records WHILE NOT End-of-file DO BEGIN IF IF Quantity-in-stock is less than Minimum-order-quantity THEN GENERATE new order ELSE DO nothing END IF END DO READ next prescription SELECT CASE CASE (prescription for formulated drug) DO send to lab station CASE (prescription for off-the-shelf drug) DO send to shelving station CASE (prescription for narcotic drug) DO send to secure station END CASE
4 Decision Tables Conditions/ Rules Courses of Action Employee type S H H H Hours worked - <40 40 >40 Pay base salary X Calculate hourly wage X X X Calculate overtime X Produce absence report X
5 Decision Trees Pay base salary 1 Salaried Hourly <40 Calculate hourly wage; Produce absence report 2 40 >40 Calculate hourly wage Legend 1) Type of employee 2) Hours worked Calculate hourly wage; Calculate overtime wage
6 Network Models Network Decomposition Diagram hubs - places where data is stored or processing is done for users at some other location workstations - places where a user physically sits and can access the system remotely Hub Connectivity Diagrams simply says what hubs and external networks have to exchange data
7 Network Decomposition Diagram System Hub Hub Hub External Network Workstation Workstation Set of Workstation Workstation Workstations Workstation
8 Hub Connectivity Diagram Hub 35 miles 50 feet Hub Hub 3000 miles External Network
9 Simple Example Customer Ordering System Server Credit Verification Service Server 200 miles Credit Verification Service System Administrator Order Takers
10 - Includes: Data Dictionary - descriptions of all pieces of data - relationships between pieces of data - Purposes - eliminate ambiguities - identify links between DFDs and ERD - clarify how different pieces of data are related - serves as a standard reference throughout the project - specify what is contained in data stores and flows
11 What needs to be defined Data flows Entities Data stores Relationships are collections of Data elements correspond to are collections of Attributes
12 Basic parts of a definition Name (that appears on the diagram) Type (data flow, data store, entity, etc.) Description (text) Synonyms (other names used for same thing) What it contains What it is contained in Constraints/data type
13 Data Flow Definition Name (that appears on the diagram) Type = data flow Description (text) Synonyms What it contains - list of data elements; lowerlevel data flows What it is contained in - data flow in higher-level diagram Constraints - source and destination
14 Example Data Flow Definition Name: Customer Record Type: data flow Description: The customer information that needs to be stored in the customer DB Synonyms: none What it contains: data elements: customer ID customer name customer address customer phone lower-level data flows: none What it is contained in: none Constraints: Source: Process 5, Create Customer Record Destination: Data Store D3, Customer Master
15 Data Store Definition Name (that appears on the diagram, including ID) Type = data store Description (text) Synonyms What it contains - list of data elements What it is contained in - n/a Constraints - physical form, if known
16 Example Data Store Definition Name: Customer Master Type: data store Description: Information on all customers who have provided this information when placing an order Synonyms: none What it contains: data elements: customer ID customer name customer address customer phone What it is contained in: n/a Constraints: form is a database table
17 Data Element Definition Name (does not appear on the diagram) Type = data element Description (text) Synonyms (other data elements and attributes) What it contains - n/a What it is contained in (data stores and data flows) Constraints (format, length, valid values)
18 Example Data Element Definition Name: customer name Type: data element Description: The last name of a customer who has at one time placed an order Synonyms: attribute Customer.name What it contains: n/a What it is contained in: data flow Customer Record; data store Customer Master Constraints: must be a character string with maximum length 15
19 Entity Definition Name (that appears on the diagram) Type = entity Description (text) Synonyms What it contains (attributes) What it is contained in - n/a Constraints (identifier)
20 Example Entity Definition Name: Customer Type: entity Description: Any individual who has at one time placed an order and purchased goods Synonyms: none What it contains: attributes Customer_ID, Name, Address, Phone What it is contained in: n/a Constraints: Customer_ID must be unique
21 Relationship Definition Name (that appears on the diagram) Type = relationship Description (text) Synonyms What it contains (attributes, including key attributes of participating entities) What it is contained in - n/a Constraints (cardinality, degree, operational constraints)
22 Example Relationship ERD DFD Name Customer_ID CUSTOMER Phone Address 8 Charge Customer Purchase Customer Information owner type Has Account Information Purchase Information ACCOUNT account number balance D5 Customer Accounts
23 Example Relationship Definition Name: Has Type: relationship Description: Associates individual customers with the credit accounts they have with this business, that they can use to purchase goods Synonyms: data store D5, Customer Accounts What it contains: attributes Customer.Customer_ID, Account.account_number, owner_type What it is contained in: n/a Constraints: binary; many-to-one; mandatory for accounts, but not customers
24 Attribute Definition Name (that appears on the diagram) Type = attribute Description (text) Synonyms (other attributes and data elements ) What it contains - n/a What it is contained in (entities and relationships) Constraints (format, length, valid values)
25 Example Attribute Definition Name: Name Type: attribute Description: The last name of a customer who has at one time placed an order Synonyms: data element customer_name What it contains: none What it is contained in: entity Customer Constraints: must be a character string with maximum length 15
System Analysis & design
Assiut University Faculty of Computers and Information System Analysis & design Year 2 Academic Year 2014/ 2015 Term (2) Copyright 2014 Dr. Hossam Ragab 6 data model describes the data that flow through
More informationSIF8035. Events and System Requirements
SIF8035 Lecture 4 DFD and PrM Events and System Requirements Events Occurrences at a specific time and place Trigger all system processing Requirement definition Determine relevant events External events
More informationLecture 5 STRUCTURED ANALYSIS. PB007 So(ware Engineering I Faculty of Informa:cs, Masaryk University Fall Bühnová, Sochor, Ráček
Lecture 5 STRUCTURED ANALYSIS PB007 So(ware Engineering I Faculty of Informa:cs, Masaryk University Fall 2015 1 Outline ² Yourdon Modern Structured Analysis (YMSA) Context diagram (CD) Data flow diagram
More informationLab # 1. Structuring System Requirements: Diagrams
Lab # 1 Structuring System Requirements: Diagrams Objectives 1. Use Case diagrams 2. Class Objects (CO) diagrams 3. Context Data Flow Diagrams (Context DFDs) 4. Level-0 Data Flow Diagrams (Level-0 DFDs)
More informationSystem Analysis & design
Assiut University Faculty of Computers and Information System Analysis & design Year 2 Academic Year 2014/ 2015 Term (2) 5 A PICTURE IS WORTH A 1,000 WORDS A process model is a graphical way of representing
More informationLecture Notes. Structured Systems Analysis
Lecture Notes Structured Systems Analysis Lecture 3 Structured Analysis & Data Flow Diagrams Written by Dr. Fred Grossman Copyright 1999 Fred Grossman All Rights Reserved Structured Systems Analysis Structured
More informationInformation Technology Audit & Cyber Security
Information Technology Audit & Cyber Security Structured Data Requirements Systems & Infrastructure Lifecycle Management with E-R LEARNING OBJECTIVES Explain the role of conceptual data modeling in the
More informationEntity Relationship Diagram (ERD) Dr. Moustafa Elazhary
Entity Relationship Diagram (ERD) Dr. Moustafa Elazhary Data Modeling Data modeling is a very vital as it is like creating a blueprint to build a house before the actual building takes place. It is built
More information[Page 177 (continued)] a. if ( age >= 65 ); cout << "Age is greater than or equal to 65" << endl; else cout << "Age is less than 65 << endl";
Page 1 of 10 [Page 177 (continued)] Exercises 4.11 Identify and correct the error(s) in each of the following: a. if ( age >= 65 ); cout
More informationCHAPTER 4 Data and Process Modeling (Phase 2: Systems Analysis)
CHAPTER 4 Data and Process Modeling (Phase 2: Systems Analysis) Jakrapop Maisen DATA FLOW DIAGRAMS A data flow diagram (DFD) shows how data moves through an information system but does not show program
More informationDistributed KIDS Labs 1
Distributed Databases @ KIDS Labs 1 Distributed Database System A distributed database system consists of loosely coupled sites that share no physical component Appears to user as a single system Database
More informationTHE ENTITY- RELATIONSHIP (ER) MODEL CHAPTER 7 (6/E) CHAPTER 3 (5/E)
THE ENTITY- RELATIONSHIP (ER) MODEL CHAPTER 7 (6/E) CHAPTER 3 (5/E) 2 CHAPTER 7 OUTLINE Using High-Level, Conceptual Data Models for Database Design Entity-Relationship (ER) model Popular high-level conceptual
More informationDatabase Design. 2-3 Entity Relationship Modeling and ERDs. Copyright 2015, Oracle and/or its affiliates. All rights reserved.
Database Design 2-3 Objectives This lesson covers the following objectives: Define the meaning of implementation-free as it relates to data models and database design implementation List the four goals
More informationFurniture Job Costing. 1. From the Master Menu, double-click. The Keyop Menu opens.
About Job Costing You can enter job costing items or hours for employees to a project. This lets you keep details for audit purposes. You can create a table of hourly, regular and overtime rates for an
More informationREPRESENTING ALGORITHMS. REPRESENTING ALGORITHMS IB DP Computer science Standard Level ICS3U
C A N A D I A N I N T E R N A T I O N A L S C H O O L O F H O N G K O N G 2.1 Introduction 2.2 Representing Algorithms algorithm should be clear, precise, and unambiguous one possibility is to use the
More informationDatabases Tutorial. January 19,2012 Jing Chen Mcmaster University
Databases Tutorial January 19,2012 Jing Chen Mcmaster University Info Office: ITB 229 Email: chenj45@univmail.cis.mcmaster.ca Homepage: http://www.cas.mcmaster.ca/~chenj45 Outline (to be continued ) Review
More informationChapter 1: Introduction
This image cannot currently be displayed. Chapter 1: Introduction Database System Concepts, 5th Ed. See www.db-book.com for conditions on re-use Chapter 1: Introduction Purpose of Database Systems View
More informationProcess Modeling. Wei-Tsong Wang 1 IIM, NCKU
Process Modeling Based on Chapter 9 of Whitten, Bentley, and Dittman: Systems Analysis and Design for the Global Enterprise (7th Ed). McGraw Hill. 2007 Wei-Tsong Wang 1 IIM, NCKU 2 Models: Logical and
More informationAnalysis and Design for Systems h. 9 th Edition
Analysis and Design for Systems h 9 th Edition Chapter 5 Data and Process Analysis Chapter Objectives Describe data and process modeling dli concepts and tools, including data flow diagrams, a data dictionary,
More informationTask: Design an ER diagram for that problem. Specify key attributes of each entity type.
Q1. Consider the following set of requirements for a university database that is used to keep track of students transcripts. (10 marks) 1. The university keeps track of each student s name, student number,
More informationChapter 9. Process Modeling. McGraw-Hill/Irwin. Copyright 2007 by The McGraw-Hill Companies, Inc. All rights reserved.
Chapter 9 Process Modeling McGraw-Hill/Irwin Copyright 2007 by The McGraw-Hill Companies, Inc. All rights reserved. Objectives Define systems modeling and differentiate logical and physical models. Define
More informationFLOW CHART AND PSEUDO CODE
FLOW CHART AND PSEUDO CODE Flowchart A Flowchart is a pictorial representation of an algorithm. The First flowchart is made by John Von Newman in 1945. It is a symbolic diagram of operation sequence, dataflow,
More informationCSE Information Systems 1
CSE1204 - Information Systems 1 Detailed Process Definitions; The Data Dictionary Data Dictionary the data dictionary is a database or repository of information about objects identified during systems
More informationMIS2502: Data Analytics Relational Data Modeling - 1. JaeHwuen Jung
MIS2502: Data Analytics Relational Data Modeling - 1 JaeHwuen Jung jaejung@temple.edu http://community.mis.temple.edu/jaejung Where we are Now we re here Data entry Transactional Database Data extraction
More informationProcess Modelling. Data flow Diagrams. Process Modelling Data Flow Diagrams. CSE Information Systems 1
CSE104 - Information s 1 Process Modelling Data Flow Diagrams Process Modelling Process modelling aims to graphically represent the processes which capture, manipulate, store and distribute data. data
More informationFAQ: Relational Databases in Accounting Systems
Question 1: What is the definition of a schema as it relates to a database? What are the three levels? Answer 1: A schema describes the logical structure of a database. The three levels of schemas are
More informationTranslation of ER-diagram into Relational Schema. Dr. Sunnie S. Chung CIS430/530
Translation of ER-diagram into Relational Schema Dr. Sunnie S. Chung CIS430/530 Learning Objectives Define each of the following database terms Relation Primary key Foreign key Referential integrity Field
More informationSoftware Engineering Prof.N.L.Sarda IIT Bombay. Lecture-11 Data Modelling- ER diagrams, Mapping to relational model (Part -II)
Software Engineering Prof.N.L.Sarda IIT Bombay Lecture-11 Data Modelling- ER diagrams, Mapping to relational model (Part -II) We will continue our discussion on process modeling. In the previous lecture
More informationExample: specific person, company, event, plant
A database can be modeled as: a collection of entities, relationship among entities. An entity is an object that exists and is distinguishable from other objects. Example: specific person, company, event,
More informationDetailed Data Modelling. Detailed Data Modelling. Detailed Data Modelling. Identifying Attributes. Attributes
IMS1002 /CSE1205 Systems Analysis and Design Detailed Data Modelling The objective of detailed data modelling is to develop a detailed data structure that: Detailed Data Modelling: Attribute Collection
More informationDesign Process Modeling Constraints E-R Diagram Design Issues Weak Entity Sets Extended E-R Features Design of the Bank Database Reduction to
Design Process Modeling Constraints E-R Diagram Design Issues Weak Entity Sets Extended E-R Features Design of the Bank Database Reduction to Relation Schemas Database Design UML A database can be modeled
More informationChapter VI: Process Analysis and Modeling
1. Introduction In the structured analysis, the data is modeled by ERD diagram after requirements are collected. When the data feeds on the system, it is transformed to the output. Transforming an input
More informationEssentials of Database Management (Hoffer et al.) Chapter 2 Modeling Data in the Organization
Essentials of Database Management (Hoffer et al.) Chapter 2 Modeling Data in the Organization 1) The logical representation of an organization's data is called a(n): A) database model. B) entity-relationship
More informationII. Data Models. Importance of Data Models. Entity Set (and its attributes) Data Modeling and Data Models. Data Model Basic Building Blocks
Data Modeling and Data Models II. Data Models Model: Abstraction of a real-world object or event Data modeling: Iterative and progressive process of creating a specific data model for a specific problem
More informationRelease Date: September, 2015 Updates:
Release Date: September, 2015 Updates: 2 3 4 5 The words "data" and "information" are often used as if they are synonyms. Nevertheless, they have different meanings. Data is raw material from which you
More informationObject Oriented Programming Using C ++ Page No. : 1. ASSIGNMENT SHEET WITHOUT USING OBJECT AND CLASSES
Object Oriented Programming Using C ++ Page No. : 1. ASSIGNMENT SHEET WITHOUT USING OBJECT AND CLASSES 1. Write a program to calculate the sum of two numbers using function. 2. Write a program to calculate
More information13/11/2017. Meltem Özturan misprivate.boun.edu.tr/ozturan/mis515
Meltem Özturan misprivate.boun.edu.tr/ozturan/mis515 2 1 Traditional Approach to Requirements Data Flow Diagram (DFD) A graphical system model that shows all of the main requirements for an information
More informationChapter 1 Chapter-1
Chapter 1 Chapter-1 Data: Data are the raw facts that can be obtained after some experiments or observations. Raw data is of no use until and unless we process it to find some useful information form it.
More informationA Quick Review of Chapter 1
A Quick Review of Chapter 1 The core of computing is algorithms Algorithm A well-ordered collection of unambiguous and effectively computable operations that, when executed, produces a result and halts
More informationGuided Tour: Intelligent Conceptual Modelling in EER and UML-like class diagrams with icom compared to ORM2
Guided Tour: Intelligent Conceptual Modelling in EER and UML-like class diagrams with icom compared to ORM2 Abstract. In this guided tour we illustrate the advantages of intelligent conceptual modelling,
More informationDetailed Data Modelling: Attribute Collection and Normalisation of Data
Detailed Data Modelling IMS1002 /CSE1205 Systems Analysis and Design Detailed Data Modelling: Attribute Collection and Normalisation of Data The objective of detailed data modelling is to develop a detailed
More informationBachelor in Information Technology (BIT) O Term-End Examination
No. of Printed Pages : 6 I CSI-14 I Bachelor in Information Technology (BIT) O Term-End Examination cn Cn1 June, 2010 CD cp CSI-14 : DATA ANALYSIS AND DATABASE DESIGN Time : 3 hours Maximum Marks : 75
More informationUpon completion of this Unit, the students will be introduced to the following
Instructional Objectives Upon completion of this Unit, the students will be introduced to the following The meaning of the term database. Meaning of the term Database Management System (DBMS). The typical
More informationFull file at
Modern Database Management, 10e (Hoffer/Ramesh/Topi) Chapter 2 Modeling Data in the Organization 1) Data modeling may be the most important part of the systems development process because: A) data characteristics
More information(Murlidhar Group of Institutions,Bhavnagar Road, Rajkot) by:-assit. Prof. Vijay Vora (SOOADM) MCA-III
Analysis Modeling What is Analysis Modeling? Analysis modeling uses a combination of text and diagrammatic forms to depict(represent) requirements for data, function, and behavior These text and diagrammatic
More informationTutorial. Creating ERDs Using
Tutorial Creating ERDs Using Microsoft Visio 2007 Sandra Dyke, 2009 Visio 2007 Tutorial: Creating ERDs Contents Page Using Visio to Create ERDs... 1 Let s Get Started... 3 Changing the Relationship to
More informationMahathma Gandhi University
Mahathma Gandhi University BSc Computer science III Semester BCS 303 OBJECTIVE TYPE QUESTIONS Choose the correct or best alternative in the following: Q.1 In the relational modes, cardinality is termed
More informationCIS 330: Web-driven Web Applications. Lecture 2: Introduction to ER Modeling
CIS 330: Web-driven Web Applications Lecture 2: Introduction to ER Modeling 1 Goals of This Lecture Understand ER modeling 2 Last Lecture Why Store Data in a DBMS? Transactions (concurrent data access,
More informationTestOut Client Pro - English RELEASE NOTES. Modified
TestOut Client Pro - English 5.1.0 RELEASE NOTES Modified 2017-07-06 Contents Overview... 2 Version 5.1.0 Release... 2 Entire Course... 2 Text Lessons... 2 Exams and Quizzes... 2 Demos, Videos, and Simulations...
More informationDatabase Design - Section 11. Instructor Guide
Instructor Guide Table of Contents...1 Lesson 1 - What About Me?...1 What Will I Learn?...2 Why Learn It?...3...4 Try It / Solve It...5 Lesson 2 - Drawing Conventions for Readability...6 What Will I Learn?...7
More informationChapter 1: Introduction
Chapter 1: Introduction Chapter 1: Introduction Purpose of Database Systems Database Languages Relational Databases Database Design Data Models Database Internals Database Users and Administrators Overall
More informationSystem Analysis and Design. Data Flow Diagram. System Analysis and Design
Data Flow Diagram 1 Data Flow diagram The dataflow diagram is a modeling tool that allows us to picture a system as a network of functional processes, connected to one another by pipelines and holding
More informationLogical E/R Modeling: the Definition of Truth for Data
Logical E/R Modeling: the Definition of Truth for Data Jeff Jacobs Jeffrey Jacobs & Associates Belmont, CA phone: 650.571.7092 email: jeff@jeffreyjacobs.com http://www.jeffreyjacobs.com Survey Do you plan
More informationChapter 1: Introduction
Chapter 1: Introduction Slides are slightly modified by F. Dragan Database System Concepts, 5th Ed. See www.db-book.com for conditions on re-use Chapter 1: Introduction Purpose of Database Systems View
More informationCS 190C: Introduction to Computational Thinking
CS 190C: Introduction to Computational Thinking http://secant.cs.purdue.edu/cs190c:start Python Programming: An Introduction to Computer Science Zelle s book is a gentle introductory computing text used
More informationHow do archivists identify and capture records?
QUESTION How do archivists identify and capture records? AUTOMATED SYSTEMS MEETING THE CHALLENGE Critical Skill Set: Information System Analysis and Design Skills Being able to create conceptual models
More informationChapter 1: Introduction. Chapter 1: Introduction
Chapter 1: Introduction Database System Concepts, 5th Ed. See www.db-book.com for conditions on re-use Chapter 1: Introduction Purpose of Database Systems View of Data Database Languages Relational Databases
More informationAlgorithms and Conditionals
Algorithms and Conditionals CSC 1051 Data Structures and Algorithms I Dr. Mary-Angela Papalaskari Department of Computing Sciences Villanova University Course website: www.csc.villanova.edu/~map/1051/
More informationDatabase Design. 8-4 Drawing Conventions for Readability. Copyright 2015, Oracle and/or its affiliates. All rights reserved.
1 Database Design 8-4 Objectives This lesson covers the following objectives: Apply the Oracle drawing conventions to a data model diagram Identify high volume entities in a data model diagram and explain
More informationTable of Contents *** IMPORTANT NOTE ***
Table of Contents Using QuickBooks With E2 Pg. 2 Installing the Interface File Pg. 3 Conversion from QuickBooks Pg. 4 Settings in E2 for Sync Option Pg. 6 Settings in QuickBooks for Sync option Pg. 7 Transferring
More informationCSC 261/461 Database Systems Lecture 7
CSC 261/461 Database Systems Lecture 7 Spring 2018 Announcement Project 1 Milestone 1 is due Tonight Project 2 Part 1: will be out tonight! You should definitely go to workshops this week Workshop on Project
More informationER modeling. Lecture 4
ER modeling Lecture 4 1 Copyright 2007 STI - INNSBRUCK Today s lecture ER modeling Slides based on Introduction to Entity-relationship modeling at http://www.inf.unibz.it/~franconi/teaching/2000/ct481/er-modelling/
More informationObjectives of logical design... Transforming the ERD diagram into relations. Relational database components. Mapping a composite attribute
Logical database design and the relational model Objectives of logical design... Translate the conceptual design into a logical database design that can be implemented on a chosen DBMS Input: conceptual
More informationNon-overlappingoverlapping. Final outcome of the worked example On pages R&C pages R&C page 157 Fig 3.52
Objectives Computer Science 202 Database Systems: Entity Relation Modelling To learn what a conceptual model is and what its purpose is. To learn the difference between internal models and external models.
More informationER DIAGRAM ER) diagram, a graphical representation of entities and their relationships to each other, typically used in computing in regard to the
ER DIAGRAM ER) diagram, a graphical representation of entities and their relationships to each other, typically used in computing in regard to the organization of data within databases or information systems.
More informationCSC 261/461 Database Systems Lecture 6. Spring 2017 MW 3:25 pm 4:40 pm January 18 May 3 Dewey 1101
CSC 261/461 Database Systems Lecture 6 Spring 2017 MW 3:25 pm 4:40 pm January 18 May 3 Dewey 1101 CSC 261/461 Database Systems Lecture 6 Spring 2017 MW 3:25 pm 4:40 pm January 18 May 3 Dewey 1101 Announcement
More information17/03/2018. Meltem Özturan
Meltem Özturan www.mis.boun.edu.tr/ozturan/samd 2 1 Traditional Approach to Requirements Traditional Analysis Model Data flow diagrams Process description Data flow definiton Data store definition (Entity-Relationship
More informationChapter 10. Database System Development Lifecycle
Chapter 10 Database System Development Lifecycle Chapter 10 - Objectives Main components of an information system. Main stages of database system development lifecycle. Main phases of database design:
More informationChapter 6: Entity-Relationship Model. The Next Step: Designing DB Schema. Identifying Entities and their Attributes. The E-R Model.
Chapter 6: Entity-Relationship Model The Next Step: Designing DB Schema Our Story So Far: Relational Tables Databases are structured collections of organized data The Relational model is the most common
More informationINFS 328 Systems Analysis and Design
INFS 328 Systems Analysis and Design Session 13 Systems Analysis and Construction Tools Lecturer: Prof. Ellis Edwin Badu, Dept. of Information Studies Contact Information: eebadu@ug.edu.gh College of Education
More informationThe Data Organization
C V I T F E P A O TM The Data Organization 1251 Yosemite Way Hayward, CA 94545 (510) 303-8868 info@thedataorg.com Common Data Modeling and Database Design Mistakes By Rainer Schoenrank Data Warehouse Consultant
More informationData about data is database Select correct option: True False Partially True None of the Above
Within a table, each primary key value. is a minimal super key is always the first field in each table must be numeric must be unique Foreign Key is A field in a table that matches a key field in another
More informationRelational Model (cont d) & Entity Relational Model. Lecture 2
Relational Model (cont d) & Entity Relational Model Lecture 2 Relational Database Operators Relational algebra Defines theoretical way of manipulating table contents using relational operators: SELECT
More informationThe Entity-Relationship Model (ER Model) - Part 1
Lecture 4 The Entity-Relationship Model (ER Model) - Part 1 By Michael Hahsler Based on slides for CS145 Introduction to Databases (Stanford) Lecture 4 > Section 1 Introduction to Database Design 2 Lecture
More informationThe Next Step: Designing DB Schema. Chapter 6: Entity-Relationship Model. The E-R Model. Identifying Entities and their Attributes.
Chapter 6: Entity-Relationship Model Our Story So Far: Relational Tables Databases are structured collections of organized data The Relational model is the most common data organization model The Relational
More informationUNIVERSITI SAINS MALAYSIA. CIT502 Object-Oriented Programming and Software Engineering
UNIVERSITI SAINS MALAYSIA First Semester Examination Academic Session 2003/2004 September/October 2003 CIT502 Object-Oriented Programming and Software Engineering Duration : 3 hours INSTRUCTION TO CANDIDATE:
More informationDatabase Management System 6 ER Modeling...
Database Management System 6 School of Computer Engineering, KIIT University 6.1 A key allows us to identify a set of attributes that suffice to distinguish entities from each other A key is a property
More informationCMP-3440 Database Systems
CMP-3440 Database Systems Database Architecture Lecture 02 zain 1 Database Design Process Application 1 Conceptual requirements Application 1 External Model Application 2 Application 3 Application 4 External
More informationChapter 2 Introduction to Transaction Processing
Chapter 2 Introduction to Transaction Processing TRUE/FALSE 1. Processing more transactions at a lower unit cost makes batch processing more efficient than real-time systems. T 2. The process of acquiring
More informationRequirements Engineering
Requirements Engineering Semi-Formal Specification: Structural Functional Requirements Structured Analysis Data Flow Diagrams SADT IDEF0 1 Back to the past GO/AO OO SA (DT) DFD SADT IDEF (Back to the future)
More informationDatabase Systems. Overview - important points. Lecture 5. Some introductory information ERD diagrams Normalization Other stuff 08/03/2015
Lecture 5 Database Systems Instructor: M.Imran Khalil Imrankhalil3@gmail.com Resource:Imrankhalil3.wordpress.com University of Sargodha Canal Campus Lahore Overview - important points Some introductory
More informationEntity Relationship Modelling
Entity Relationship Modelling P.J. M c.brien Imperial College London P.J. M c.brien (Imperial College London) Entity Relationship Modelling 1 / 49 Introduction Designing a Relational Database Schema How
More informationRequirements Analysis. SE 555 Software Requirements & Specification
Requirements Analysis Goals of Requirements Analysis Create requirements containing sufficient detail and of high enough quality to allow realistic project planning as well as successful design and implementation.
More informationSOFTWARE ANALYSIS & DESIGN TOOLS
SOFTWARE ANALYSIS & DESIGN TOOLS http://www.tutorialspoint.com/software_engineering/software_analysis_design_tools.htm Copyright tutorialspoint.com Software analysis and design includes all activities,
More informationOracle Data Modelling & Database Design Course Content:35-40hours
Oracle Data Modelling & Database Design Course Content:35-40hours Course Outline Introduction to Modeling List the reasons why modeling is important Describe the phases of the Database and Application
More informationAgenda: Understanding Relationship Types Degree and Cardinality with Examples
Data Processing AAOC C311 I Semester 2012 2013 CLASS 4 Agenda: Understanding Relationship Types Degree and Cardinality with Examples Prentice Hall, 2002 1 More on Relationships (A set of meaningful associations
More informationCHAPTER 2 INTRODUCTION TO TRANSACTION PROCESSING
Chapter 2 Page 20 REVIEW QUESTIONS CHAPTER 2 INTRODUCTION TO TRANSACTION PROCESSING. The expenditure cycle, conversion cycle, and revenue cycle. 2. Purchases/accounts payable system, cash disbursements
More informationCENTRAL SUSQUEHANNA INTERMEDIATE UNIT Application: Payroll
CENTRAL SUSQUEHANNA INTERMEDIATE UNIT Application: Payroll Employer Parameters Time Clock Set Up Step-by-step Instructions 2012 Central Susquehanna Intermediate Unit, USA Table of Contents Introduction...
More informationRequests Charges. Librarian. University affiliated patrons students, faculty, staff. Media Center Staff
Catherine Rutan INFO 530-901 Dr. Valerie Yonker Circulation of Media Materials from University Media Center: Requests Charges Librarian Circulation Desk Attendant Inquires University ID # (Primary Key)
More informationUnit 2 - Data Modeling. Pratian Technologies (India) Pvt. Ltd.
Unit 2 - Data Modeling Pratian Technologies (India) Pvt. Ltd. Topics Information Engineering Approaches to IS Developments SDLC Prototyping ER Modeling Why Data Modeling? Definition Information Engineering
More informationRequirements Engineering. Contents. Functional requirements. What is a requirement?
Contents Ø Introduction 4 Ø Engineering Ø Project Management Ø Software Design Ø Detailed Design and Coding Ø Quality Assurance Engineering Ø What is a Requirement? Ø RE Activities Ø Documentation Ø RE
More informationConsistency The DBMS must ensure the database will always be in a consistent state. Whenever data is modified, the database will change from one
Data Management We start our studies of Computer Science with the problem of data storage and organization. Nowadays, we are inundated by data from all over. To name a few data sources in our lives, we
More informationCS 115 Exam 3, Fall 2011
Your name: Rules You may use one handwritten 8.5 x 11 cheat sheet (front and back). This is the only resource you may consult during this exam. Explain/show work if you want to receive partial credit for
More informationUsing High-Level Conceptual Data Models for Database Design A Sample Database Application Entity Types, Entity Sets, Attributes, and Keys
Chapter 7: Data Modeling Using the Entity- Relationship (ER) Model Using High-Level Conceptual Data Models for Database Design A Sample Database Application Entity Types, Entity Sets, Attributes, and Keys
More informationEntity-Relationship Model. From Chapter 5, Kroenke book
Entity-Relationship Model From Chapter 5, Kroenke book Database Design Process Requirements analysis Conceptual design data model Logical design Schema refinement: Normalization Physical tuning Problem:
More informationChapter 4 Entity Relationship Modeling In this chapter, you will learn:
Chapter Entity Relationship Modeling In this chapter, you will learn: What a conceptual model is and what its purpose is The difference between internal and external models How internal and external models
More informationProblem Solving with Decisions. T.Fatin Alhila
Problem Solving with Decisions 1 Decision Logic Structure - The decision structure is one of the most powerful structures because it is the only way that the computer can choose between two or more sets
More informationChapter : Analysis Modeling
Chapter : Analysis Modeling Requirements Analysis Requirements analysis Specifies software s operational characteristics Indicates software's interface with other system elements Establishes constraints
More informationMTAT Introduction to Databases
MTAT.03.105 Introduction to Databases Lecture #4 Entity-Relationship Modelling Ljubov Jaanuska (ljubov.jaanuska@ut.ee) Lecture 3. Summary So far we have been dealing with a relational database (PCA.db)
More informationData and Process Modeling
Chapter 5 Data and Process Modeling 5 CHAPTER Data and Process Modeling Chapter 5 is the second of four chapters in the systems analysis phase of the SDLC. This chapter discusses data and process modeling
More information