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Designing Databases Using Access

Designing Databases Using Access

Designing Databases Using Access. WHAT DO WE MEAN BY "DATABASE DESIGN?". "DATABASE DESIGN IS A PROCESS THAT TAKES A SET OF USER REQUIREMENTS AS INPUT AND PRODUCES DATABASE STRUCTURES CAPABLE OF SUPPORTING THESE REQUIREMENTS AS OUTPUT.". THE 2-STEP DATABASE DESIGN PROCESS.

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1.71k views • 146 slides
Chapter 8: Object-Oriented Databases

Chapter 8: Object-Oriented Databases

Chapter 8: Object-Oriented Databases. Need for Complex Data Types The Object-Oriented Data Model Object-Oriented Languages Persistent Programming Languages Persistent C++ Systems. Need for Complex Data Types.

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629 views • 45 slides
The Relational Model

The Relational Model

The Relational Model. Relation. Definition: A relation is a named, two-dimensional table of data Table consists of rows (records) and columns (attribute or field) Requirements for a table to qualify as a relation: It must have a unique name

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497 views • 37 slides
Chapter 13

Chapter 13

Chapter 13. Normalization Transparencies. Chapter 13 - Objectives. The purpose of normalization. The problems associated with redundant data. The identification of various types of update anomalies such as insertion, deletion, and modification anomalies.

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569 views • 32 slides
Ch 6: ER to Relational Mapping

Ch 6: ER to Relational Mapping

Ch 6: ER to Relational Mapping. Much of the material presented in these slides was developed by Dr. Ramon Lawrence at the University of Iowa. ER Model to Relational Schemas. These notes will describe how to convert an ER diagram into a corresponding relational schema.

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811 views • 29 slides
Chapter 5: Transforming EER Diagrams into Relations

Chapter 5: Transforming EER Diagrams into Relations

Chapter 5: Transforming EER Diagrams into Relations. Mapping Regular Entities to Relations Simple attributes: E-R attributes map directly onto the relation Composite attributes: Use only their simple, component attributes

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2k views • 29 slides
Mapping E/R Diagrams to Relational Database Schemas

Mapping E/R Diagrams to Relational Database Schemas

Mapping E/R Diagrams to Relational Database Schemas. Second Half of Chapter 3. E/R ? Relation Model (Example). since. since. name. name. dname. dname. ssn. did. did. budget. budget. lot. (0,*). (1,1). Departments. Employees. Manages. (0,*). hours_worked. (0,*). Works_In. ?.

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231 views • 13 slides

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