Wednesday, February 9, 2011

Chapter 7

Most Modern database management programs support a standard language for programming complete queries called SQL
BQ: What does SQL stand for?
Personal information manager (PIM): an electronic organizer
-automates some or all or the following functions: address/phone book, appointmenr calender, to do list, miscellaneous notes
-handheld computers can share information with applications such as iCalender running on PCs and Macintoshes.
File Manager: enables users to work with one file a time
Database management system (DBMS): manipulates data in a large collection of data of files, cross-referencing between files as needed.
 -used interactively or can be controlled by other programs.
To most users, a relational database program is one that allows tables to be related to each other.
-changes in one table are reflected in other tables automatically
To computer scientists, the term relational database has a technical definition related to: the underlying structure of the data and the rules specifying how that data can be manipulated.

No comments:

Post a Comment