'Surrogate key' diaporamas de présentation

Chapter 1 Overview of Database Concepts

Chapter 1 Overview of Database Concepts. Chapter Objectives. Identify the purpose of a database management system (DBMS) Distinguish a field from a record and a column from a row Identify the basic components of an Entity-Relationship Model

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How to design a DATA WAREHOUSE

Linh Nguyen (Elly). How to design a DATA WAREHOUSE. What is DW? DW architecture How to design a DW? Advantages of DW Disadvantages of DW Questions and Answers. Agenda. What is DW? DW architecture How to design a DW? Advantages of DW Disadvantages of DW Questions and Answers. Agenda.

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Surrogate Key & Slowly Changing Dimensions

Surrogate Key & Slowly Changing Dimensions. Surrogate Key. Solusi Surrogate Key. SQL Statement. CREATE TABLE negara ( negara_sk int IDENTITY(1,2) PRIMARY KEY, kode_negara varchar (10) NOT NULL, nama_negara varchar (50) NOT NULL, gdp int ) Identity( a,b ) : a : seed b : increment.

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Building a Data Warehouse with SQL Server

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5.4 Improving the Design

5.4 Improving the Design. Table structures cleaned up to eliminate initial partial and transitive dependencies Normalization cannot, by itself, be relied on to make good designs It is valuable because its use helps eliminate data redundancies. Improving the Design (continued).

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Database Design

Database Design. CIS 218. Three Stages of Database Development. Requirements Design Implementation. The Design Stage. Identify Entities Identify Attributes Choose Primary Keys Normalization Identify Relationships. Entity. A Person, Place, Thing or Transaction

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Platinum

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Platinum

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Chapter Six

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Data Manager

Data Manager . Business Intelligence Solutions. Data Mart and Data Warehouse Data Warehouse Architecture Dimensional Data Structure Extract, transform and load (ETL) Extract Transform Load. OLTP. OLTP. DATA MART. DATA. DATA. +/-. ERP. TEXT. x/y. F(x). F(x).

276 views • 16 slides