'Base relations' diaporamas de présentation

Module 6

Module 6. Relational Database Design. Topics to be covered. Pitfalls in relational database design Functional dependencies Armstrong Axioms Decomposition Desirable properties of decomposition Boyce-code normal form 3 rd and 4 th normal form Mention of other normal forms.

1.04k views • 90 slides

Module 6

Module 6. Relational Database Design. Topics to be covered. Pitfalls in relational database design Functional dependencies Armstrong Axioms Decomposition Desirable properties of decomposition Boyce-code normal form 3 rd and 4 th normal form Mention of other normal forms.

1.15k views • 90 slides

Functional Dependencies and Normalization for Relational Databases

Functional Dependencies and Normalization for Relational Databases. Chapter Outline. 1 Informal Design Guidelines for Relational Databases 1.1Semantics of the Relation Attributes 1.2 Redundant Information in Tuples and Update Anomalies 1.3 Null Values in Tuples 1.4 Spurious Tuples

691 views • 55 slides

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??? ???? ?????? ??????. Lecture ( 12&13 ). Chapter 10. Functional Dependencies and Normalization for Relational Databases. Informal Design Guidelines for Relational Databases. What is relational database design? The grouping of attributes to form "good" relation schemas

691 views • 50 slides

B. Information Technology (Hons.) CMPB245: Database Design

B. Information Technology (Hons.) CMPB245: Database Design. Physical Design. Objectives. Explain the purpose of physical database design Design base relations and integrity rules Select an appropriate file organization based on analysis of transactions. Physical Database Design: The Purpose.

644 views • 45 slides

Functional Dependencies and Normalization for Relational Databases

Functional Dependencies and Normalization for Relational Databases. Chapter Outline. Informal Design Guidelines for Relational Databases Semantics of the Relation Attributes Redundant Information in Tuples and Update Anomalies Null Values in Tuples Spurious Tuples

560 views • 44 slides

570 views • 43 slides

Chapter 10

Chapter 10. Methodology - Physical Database Design. Chapter 18, Appendix F in Textbook. Design Methodology Review. A structured approach that uses procedures, techniques, tools, and documentation aids to support and facilitate the process of design. Database Design Review.

669 views • 40 slides

Functional Dependencies and Normalization for Relational Databases

Functional Dependencies and Normalization for Relational Databases. Chapter Outline. Informal Design Guidelines for Relational Databases Semantics of the Relation Attributes Redundant Information in Tuples and Update Anomalies Null Values in Tuples Spurious Tuples

540 views • 40 slides

Lecture 9

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Chapter 16

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CSC271 Database Systems

CSC271 Database Systems. Lecture # 29. Summary: Previous Lecture. The normalization process 1NF, 2NF, 3NF Inference rules for FDs BCNF. Summary: Normalization. First normal form (1NF) A relation in which the intersection of each row and column contains one and only one value

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SMILE: A Data Sharing Platform for Mobile Apps in the Cloud

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Pertemuan <<#05>> <<MODEL RELASIONAL>>

Matakuliah : <<M0094>>/<<Pengantar Sistem Basis Data>> Tahun : <<2005>> Versi : <<1/1>>. Pertemuan <<#05>> <<MODEL RELASIONAL>>. Learning Outcomes. Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Mahasiswa dapat Menerangkan konsep dan terminologi pemodelan relasional.

429 views • 29 slides

414 views • 28 slides

Data Warehouse View Maintenance

Data Warehouse View Maintenance. Presented By: Katrina Salamon For CS561. What is a Data Warehouse?. Repository of integrated information As information becomes available from a source it is added to the repository. What is a View?. A function from a set of base tables to a derived table

401 views • 23 slides

SQL: Insertion of Tuples

SQL: Insertion of Tuples. in general: INSERT INTO R VALUES (V i , ..., V k ) ex.: INSERT INTO Supplies VALUES (''Jack'',''Oysters'',.24) null values: INSERT INTO Supplies (Name, Product) VALUES (''Jack'',''Oysters'') nested insertions: INSERT INTO Sales-Chris

334 views • 23 slides

XML Querying and Views

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Torsdag

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PHYSICAL DATABASE DESIGN

PHYSICAL DATABASE DESIGN. Overview. Step 4: Translate global logical data model for target database Step4.1: Design base relations for target DBMS Step4.2: Design enterprise constraints for target DBMS Step 5: Design Physical representation Step5.1: Analyze transactions

248 views • 12 slides