'Indexed sequential access method' diaporamas de présentation

Managing Data Resources

Managing Data Resources. 1. The Name of the Game. Information is a valuable resource. It is expensive to collect, maintain, and use. The goal of database management it to maximize the benefits gained from information maximize the accuracy of information

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Physical Database Design and Referential Integrity

Physical Database Design and Referential Integrity. University of California, Berkeley School of Information IS 257: Database Management. Lecture Outline. Review Physical Database Design Access Methods Indexes and What to index Parallel storage systems (RAID) Integrity constraints.

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CHAPTER SIX

CHAPTER SIX. Databases and Data Warehouses. Information Granularity. Refers to the level of detail of information Detailed (POS transaction) Course (Global sales totals). Transactional vs. Analytical Information. Transactional information comes from a business process A bank deposit

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Database Indexes

Database Indexes. Nimesh Shah ( nimesh.s ) , Amit Bhawnani ( amit.b ). Outline. Why Indexes ? Demo Types of Single-level Ordered Indexes Primary Indexes Clustering Indexes Secondary Indexes Multilevel Indexes Dynamic Multilevel Indexes Using B-Trees and B+-Trees

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Chapter 9 of DBMS

Chapter 9 of DBMS. First we look at a simple (strawman) approach (ISAM). We will see why it is unsatisfactory. This will motivate the B+Tree Read 9.1 to 9.5 Glance at 9.6 and 9.8.2

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CSC271 Database Systems

CSC271 Database Systems. Lecture # 30. Summary: Previous Lecture. Normalization summary/example Remaining steps/activities in building logical data model Physical database design Translate logical data model for target DBMS. Physical Database Design Methodology .

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B-Trees And B+-Trees

B-Trees And B+-Trees. Jay Yim CS 157B Dr. Lee. Preview. B-Tree Indexing B-Tree B-Tree Characteristics B-Tree Example B+-Tree B+-Tree Characteristics B+-Tree Example. B-Tree Index. Standard use index in relational databases in a B-Tree index.

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MySQL

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CHAPTER 8

CHAPTER 8. FILE PROCESSING CONCEPT. CONTENTS. Introduction Primary Key Classification of Data Files By Content By Mode of Processing By Organization of files Serial Sequential Index Sequential Random Transformation Method Q&A. Introduction.

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Physical Database

Physical Database. Monitoring and Tuning the Operational System. Outline. Purpose of physical database design. How to map the logical database design to a physical database design. design base relations for target DBMS. design enterprise constraints for target DBMS.

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Introduction to databases from a bioinformatics perspective

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File Organization & Indexing

File Organization & Indexing. Reading: C&B, Appendix C. In this lecture you will learn. How DBMS physically organizes data Different file organizations or access methods What is Indexing? Different indexing methods How to create indexes using SQL. Introduction.

757 views • 17 slides