Database Design Using Entity-Relationship Diagrams (inbunden)
Inbunden (Hardback)
Antal sidor
2 Rev ed
Auerbach Publishers Inc.
130 black & white illustrations
234 x 158 x 19 mm
653 g
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Database Design Using Entity-Relationship Diagrams

Inbunden, Engelska, 2011-09-08
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Essential to database design, entity-relationship (ER) diagrams are known for their usefulness in mapping out clear database designs. They are also well-known for being difficult to master. With Database Design Using Entity-Relationship Diagrams, Second Edition, database designers, developers, and students preparing to enter the field can quickly learn the ins and outs of ER diagramming. Building on the success of the bestselling first edition, this accessible text includes a new chapter on the relational model and functional dependencies. It also includes expanded chapters on Enhanced Entity Relationship (EER) diagrams and reverse mapping. It uses cutting-edge case studies and examples to help readers master database development basics and defines ER and EER diagramming in terms of requirements (end user requests) and specifications (designer feedback to those requests). * Describes a step-by-step approach for producing an ER diagram and developing a relational database from it * Contains exercises, examples, case studies, bibliographies, and summaries in each chapter * Details the rules for mapping ER diagrams to relational databases * Explains how to reverse engineer a relational database back to an entity-relationship model * Includes grammar for the ER diagrams that can be presented back to the user The updated exercises and chapter summaries provide the real-world understanding needed to develop ER and EER diagrams, map them to relational databases, and test the resulting relational database. Complete with a wealth of additional exercises and examples throughout, this edition should be a basic component of any database course. Its comprehensive nature and easy-to-navigate structure makes it a resource that students and professionals will turn to throughout their careers.
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Dr. Sikha Saha Bagui is an associate professor and interim associate chair in the Department of Computer Science at the University of West Florida, Pensacola, Florida. She teaches a variety of computer science and database courses, and her research areas of concentration are database design, web databases, data mining and statistical computing. Dr. Bagui has published many journal articles and co-authored several books with Dr. Earp. Dr. Richard Walsh Earp, Professor Emeritus, is a former chair of and former associate professor in the Department of Computer Science and former dean of the College of Science and Technology at the University of West Florida in Pensacola, Florida. Dr. Earp was also an instructor with Learning Tree International and worked for Computer Sciences Corporation at the Naval Air Station in Pensacola as a database consultant after his retirement from academia. He has co-authored several books with Dr. Bagui.


Data, Databases, and the Software Engineering Process Data Building a Database What is the Software Engineering Process? Entity Relationship Diagrams and the Software Engineering Life Cycle Phase 1: Get the Requirements for the Database Phase 2: Specify the Database Phase 3: Design the Database Data and Data Models Files, Records, and Data Items Moving from 3 x 5 Cards to Computers Database Models The Hierarchical Model The Network Model The Relational Model The Relational Model and Functional Dependencies Fundamental Relational Database Relational Database and Sets Functional Dependency Non-1NF to 1NF The Second Normal Form Anomalies Non-2NF to 2NF The Third Normal Form The Equijoin Operation Some Functional Dependency Rules The Boyce Codd Normal Form The Basic ER Diagram: A Data Modeling Schema What Is a Data Modeling Schema? So, What Is an Entity Relationship Diagram? Defining a Database- Some Definitions: Entity, Relationship, Attribute A Beginning Methodology ER Design Methodology A First "Entity-Only" ER Diagram: An Entity with Attributes More about Attributes The Simple or Atomic Attribute The Composite Attribute The Multivalued Attribute The Derived Attribute Keys English Description of the Entity The Method ER Design Methodology Examples Mapping the Entity Diagram to a Relational Database Case Study Beyond the First Entity Diagram Examining an Entity: Changing an Attribute to Be an Entity Defining a Relationship for Our New Entity ER Design Methodology A Preliminary Grammar for the ER Diagrams The Relationship Defining a Second Entity Does a Relationship Exist? Attribute or Relationship? ER Design Methodology Case Study Extending Relationships/Structural Constraints The Cardinality Ratio of a Relationship One to One (1:1) Many to One (M:1) One to Many (1:M) Many to Many (M:N) Participation: Full/Partial English Descriptions Tighter English Pattern 1-x:y::k:1 Pattern 2-x:y::k:1 Pattern 3-x:y::k:M Pattern 4-x:y::k:M Summary of the Patterns and Relationships ER Design Methodology Some Examples of Other Relationships An Example of the One-to-Many Relationship An Example of the Many-to-One Relationship An Example of the Many-to-Many Relationship One Final Example ER Design Methodology Pattern 1-M:1, from the M Side, Full Participation Pattern 3-1:M, from the 1 Side, Full Participation Mapping Relationships to a Relational Database Mapping Binary M:N Relationships Mapping Binary 1:1 Relationships Mapping Binary 1:N Relationships Case Study The Weak Entity Strong and Weak Entities Weak Entities and Structural Constraints Weak Entities and the Identifying Owner Another Example of a Weak Entity and the Identifying Owner Weak Entities Connected to Other Weak Entities Revisiting the Methodology Weak Entity Grammar The Keys Mapping Weak Entities to a Relational Database Case Study Further Extensions for ER Diagrams with Binary Relationships Attributes of Relationships The Attributes Relationships Developing into Entities: The M:N Relationship Revisited The Entity More Entities and Relationships More than Two Entities More Evolution of the Database Attributes that Evolve into Entities Recursive Relationships Recursive Relationships and Structural Constraints Multiple Relationships The Derived or Redundant Relationship Optional: An Alternative ER Notation for Specifying Structural Constraints on Relationships Review of the Methodology ER Design Methodology The Entity The Attributes The Keys Mapping Rules for Recursive Relationships Case Study Ternary and Higher-Order ER Diagrams Introduction Binary or Ternary Relationship? Structural Constraints for Ternary Relationships Many to Many to Many