Familiar With Relational Databases

A database is a relational database management system package for data collection problems. This package can connect a single database file that anatara with other database files.

System Configuration FoxBase

In a relational database package generally consists of one disk, where the first disc is disk system, and other disk containing the overlay.

Hardware For Qualification FoxBase Profesional

Here are the minimum hardware requirements needed for installation of LAN FoxBase Professional.

Installation FoxBase Profesional-LAN

Assuming that the operating system used is NOVVEL NetWare LANs (SFT V 2.15) VERSION DEDICATED, then organizing the data on the hard disk after the installation process novvel netware is as follows.

Types Databases

There are several types of known file in the package database, these files have different extensions in accordance with the content and functionality of the file.

Senin, 31 Oktober 2011

activate and close the database file

To be able to fill in data in a database file, then the database files must be activated or opened first, the instructions to activate the database file is:
USE[<file database name> : ?]
[IN<work area>]
[INDEX<list file index  name>]
[ALIAS<alias name>]
[NOUPDATE]
Description:

  • <file name database> is the name of the database file to be switched 
  • choice? : Used to activate the database file by QUERY
  • Option [IN<work area>]  option to open the database file in the working area of ​​the intended to
  • [INDEX<list file index  name>] include once the file index (selected) for the activated.
  •  [ALIAS<alias name>] option for given name alias
  • [NOUPDATE] prevent the activated database has not changed

Make A file database

for create database use the syintax CREATE
Ex : CREATE [<database name> : ?]
Where :
  • <database name> is a file name and should be given to the file rule of give the name equal to given to name on DOS.
  • Option ? used to select the name of the database file based on a list of file names that have been there before 
Type is CREATE scmaster on the Commmand window and then in the display will see another window, the next input field name for the first ex : Cd_prd then enter RETRUN, it will move the next field, type field type in C to give a character-type field, then the cursor will move to the third field, the width field, then type the 6, then the cursor will move to the next field name.

Note that the structure of the data in a database always consists Fielding:
Field Name
Type Field
field width
decimal field (option for type numeric or float)

Rules of ama field, not more than 10 characters, including spaces and not punctuation is not allowed diapakai to begin a field name.

Examples of the correct name
prd_name
product
category1

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