Databases Demystified a self teaching guide phần 2 pot

... screen CHAPTER 2 Exploring Relational Database Components 33 Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 2 Logical/Physical Database Design Components The logical database design ... Deleting database objects c. Adding new database objects d. Adding data items to existing database objects e. Deleting data items from existing database objects CHAPTER 1 Database...

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... row are called aggregate functions. The following table shows aggregate functions that are commonly used in relational databases: Function Name Description AVG Calculates the average value for a ... printer profile Composite Default screen 78 Databases Demystified Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 3 beauty of relational databases is that we need n...

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... Final Exam 325 Chapter 1 325 Chapter 2 325 Chapter 3 326 Chapter 4 326 Chapter 5 326 Chapter 6 326 Chapter 7 326 Chapter 8 327 Chapter 9 327 Chapter 10 327 Chapter 11 327 Chapter 12 327 Index 329 CONTENTS xv P:\010Comp\DeMYST\364-9\fm.vp Tuesday, ... models, a brief his - tory of databases, and the rationale for focusing on the relational model. Properties of a Database...

Ngày tải lên: 08/08/2014, 18:22

... that ends every SQL statement. In Oracle, a transaction is automatically started for each database user session as soon as the user connects to the database. At any time, the database user can ... table’s data. The ALTER TABLE Statement The ALTER TABLE statement may be used to change many aspects of the definition of a database table. Again, there is a wide variation in implementation a...

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... profile Composite Default screen 194 Databases Demystified Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 7 The Data Flow Diagram The data flow diagram (DFD) is the most data centric of all the ... profile Composite Default screen 20 0 Databases Demystified Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 7 11. The basic components of a f...

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... Default screen This page intentionally left blank. 22 4 Databases Demystified Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 8 8. View names: a. May be identical to one of the table ... several proprietary XML databases on the market. However, businesses have been reluctant to abandon relational data - bases and undergo a major paradigm shift in the way they o...

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... profile Composite Default screen CHAPTER 12 Databases for Online Analytical Processing 301 Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 12 Data Marts A data mart is a subset of a data warehouse ... Default screen 3 02 Databases Demystified Demystified / Databases Demystified / Oppel/ 22 5364-9 / Chapter 12 Here are some reasons for creating a...

Ngày tải lên: 08/08/2014, 18:22