Beginning Database Design- P9 ppt

... Brown’); COMMIT; TRAP ERROR ROLLBACK; END; Changing Database Metadata Database objects such as tables define how data is stored in a database; therefore, database objects are known as metadata, which ... Publishing Group 41 Gavin Powell Changing Data in a Database Changes to a database can be performed using the INSERT, UPDATE, and DELETE commands. Some database have variations o...

Ngày tải lên: 03/07/2014, 01:20

... various database engines, pictured how stored procedures should be used. Some database engines essentially allow anything, and some database engines deliber- ately restrict what can be coded in a database ... the Database Code can be stored in a database in the form of modular scripted sections. These scripts can be com- pletely independent of anything in the database, or can ope...

Ngày tải lên: 03/07/2014, 01:20

... guilty. Mishandling Keywords and Categories A common problem in database design is the failure to properly deal with keywords and categories. Many database applications involve data that is categorized ... exists that needs to be understood before any design of a database should proceed further. As you have seen in the previous chapters, databases are often set up to solve one immedia...

Ngày tải lên: 28/03/2014, 09:20

... certifi ed graphics card. Details can be found on the web page AutoCAD Certifi ed Hardware XML Database . Fig. 21.7 Second example – multileaders Please purchase PDF Split-Merge on www.verypdf.com

Ngày tải lên: 21/01/2014, 23:20

... Microsoft Access database, dBase database, Oracle Database, MySQL, Ingres, or any relational database — it doesn’t matter. All of the coding in this book is written intentionally to be non -database specific, ... Building Fast-Performing Database Models 193 The Needs of Different Database Models 194 Factors Affecting OLTP Database Model Tuning 194 Factors Affecting Client-Server...

Ngày tải lên: 10/04/2014, 09:05