Dbms

CONTENTS PREFACE Part I 1 1.1 1.2 1.3 1.4 1.5 xxii 1 3 4 5 7 8 9 10 11 14 15 15 16 17 18 18 20 21 BASICS Overview A Historical Perspective commit Systems versus a database management system Advantages of a database management system Describing and Storing Data in a DBMS 1.5.1 The relational form 1.5.2 Levels of Abstraction in a DBMS 1.5.3 Data Independence Queries in a DBMS Transaction Management 1.7.1 Concurrent Execution of transactions 1.7.2 rudimentary Transactions and System Crashes 1.7.3 Points to Note Structure of a DBMS People Who Deal with Databases Points to review article INTRODUCTION TO DATABASE SYSTEMS 1.6 1.7 1.8 1.9 1.10 2 THE ENTITY-RELATIONSHIP ideal 2.1 2.2 2.3 2.4 Overview of Database Design 2.1.1 beyond the ER position Entities, Attributes, and Entity Sets Relationships and Relationship Sets superfluous Features of the ER Model 2.4.1 Key Constraints 2.4.2 Participation Constraints 2.4.3 washed-out Entities 2.4.4 stratum Hier archies 2.4.5 Aggregation 24 24 25 26 27 30 30 32 33 35 37 vii viii 2.5 Database Management Systems Conceptual Database Design With the ER Model 2.5.1 Entity versus Attribute 2.5.2 Entity versus Relationship 2.5.3 Binary versus trinity Relationships * 2.5.

4 Aggregation versus Ternary Relationships * Conceptual Design for Large Enterprises * Points to Review 38 39 40 41 43 44 45 2.6 2.7 3 THE RELATIONAL MODEL 3.1 3.2 foundation raiment to the relational Model 3.1.1 Creating and Modifying Relations Using SQL-92 oneness Constraints over Relations 3.2.1 Key Constraints 3.2.2 Foreign Key Constraints 3.2.3 General Con straints Enforcing fairness Constraints Que! rying Relational Data Logical Database Design: ER to Relational 3.5.1 Entity Sets to Tables 3.5.2 Relationship Sets (without Constraints) to Tables 3.5.3 Translating Relationship Sets with Key Constraints 3.5.4 Translating Relationship Sets with Participation Constraints 3.5.5 Translating imperfect Entity Sets 3.5.6 Translating Class Hierarchies 3.5.7 Translating ER Diagrams with Aggregation...If you want to get a ample essay, order it on our website: BestEssayCheap.com

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