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- Ch 1 − Introduction to Powerbase
-
- 1.1 Description and installation
-
- Powerbase is a flat-file database management system for use with Acorn
- 32-bit RISC computers. Versions from 6.60 on, to which this manual apply,
- are only usable with RISC OS 3.1 or later. If you are using RISC OS 2 you
- will require a different version of Powerbase which has a version number of
- the type 5.xx. Many of the features described in the manual are not present
- in the earlier version of Powerbase but a suitable manual is available on
- request.
-
- 1.1.1 Hardware requirements
-
- It is quite feasible to use Powerbase on a 1Mb machine with a single floppy
- disc drive and, if your database runs to only a few hundred short records
- (e.g. an address-book), you might find such a system quite adequate for your
- needs. You will, however, find list generation rather slow when working
- from a floppy disc and a hard disc is strongly recommended, even for a small
- database; for large databases it is essential. If you have to work from
- floppies try to allocate enough memory to the RAM disc to copy the whole
- database onto it before you start work. This will speed up searches and
- list-generation enormously.
-
- 1.1.2 Installation
-
- To install Powerbase on your hard disc simply drag the !Powerbase
- application from the distribution disc to a suitable directory window. It is
- suggested that you also copy the sample databases e.g. !Elements, !Boxes,
- !Friends if you intend to experiment with them or work through either of the
- tutorials. These are provided in a separate booklet. If databases are
- completely new to you you are advised to work thought the Quick Tutorial
- which is based on the simple address-book database !Friends. If you are
- somewhat more experienced but are using Powerbase for the first time you
- will probably find Tutorial, using the !Elements database, more appropriate.
-
- 1.1.3 Disclaimer
-
- No warranty, express or implied, is made about the suitability of Powerbase
- for any purpose. We cannot be held responsible for any loss or damage due
- to the use of this software. All enquiries, requests for upgrades etc,
- should be directed to:−
-
- Powerbase Support
-
- 112 Keighley Road
-
- Colne
-
- Lancashire BB8 0PH
-
- When requesting an upgrade please enclose a blank, formatted disc and a
- stamped, addressed envelope.
-
- 1.2 Starting and ending a work session
-
- 1.2.1 Loading Powerbase
-
- Double-clicking on the Powerbase icon in a directory window causes the
- program to load and place its icon on the icon-bar. The words “No data”
- will be displayed under the icon.
-
- 1.2.2 Opening a database
-
- A database may be opened for use by either of the following methods:−
-
- • Dragging the database icon onto the Powerbase icon on the icon-bar.
-
- • Double-clicking on the database icon. This is the more usual method and
- may be used even if Powerbase is not already loaded, as long as it has been
- “seen” by the filer.
-
- Whether you get immediate access to the database depends on whether or not
- it is password protected. If no passwords have been defined (as is the case
- with all the sample databases on the distribution disc) the main data window
- will open and the name of the database will appear under the Powerbase icon.
-
- A password-protected database will display a small window in the middle of
- the screen requesting you to enter a password and perhaps even a personal
- user I.D. as well. The window has an Open button which should be clicked
- with SELECT when you have entered the required information. There is also a
- Cancel button which removes the window from the screen without further
- action.
-
- 1.2.3 Closing a database
-
- There are four ways of closing a database:−
-
- • Open another database, either by double-clicking or dragging to the
- Powerbase icon.
-
- • Choose Quit from Powerbase's icon-bar menu. This also quits Powerbase
- itself.
-
- • Choose Close database from the icon-bar menu. This still leaves the
- Powerbase application running. The wording underneath reverts to “No data”.
-
- • Choose Abandon database from the icon-bar menu. This resembles Close
- database but with one important difference. Changes made since the database
- was opened will be lost. In the other three cases Powerbase ensures that
- your data is safe.*
-
- 1.2.4 Quitting Powerbase
-
- Choose Quit from the icon-bar menu.
-
- 1.3 Obtaining help
-
- 1.3.1 Using the Acorn !Help application
-
- When you are first becoming acquainted with Powerbase you may find it useful
- to load Acorn’s !Help application (from Apps on the icon-bar). Resize the
- help window, if you wish, and move it to some convenient place on the
- screen. Moving the mouse pointer over the various windows and icons
- displayed by Powerbase will then give a brief description of the purpose of
- each.
-
- 1.3.2 Using the Helpreader text†
-
- Further help is available from the Help option which appears on both the
- main menu and the icon-bar menu of Powerbase. Choosing this option displays
- a text file which you can “navigate” by means of small orange buttons
- included in the text. Clicking with SELECT on such a button takes you
- directly to the part of the text referred to. Double-clicking with ADJUST
- takes you back to where you were when you last clicked on a button. Clicking
- MENU over the text window displays a menu giving an alternative means of
- access to specific parts of the text. The text has deliberately been kept
- fairly short and is in no way a substitute for this manual; it is intended
- to provide basic information only.