Download e-book for iPad: Analysis Within the Systems Development Life-Cycle. Book 3: by Rosemary Rock-Evans

By Rosemary Rock-Evans

ISBN-10: 0080341020

ISBN-13: 9780080341026

Show description

Read or Download Analysis Within the Systems Development Life-Cycle. Book 3: Activity Analysis–the Deliverables PDF

Best biology & life sciences books

Download e-book for kindle: Lectures on Developmental Physiology by Alfred Kühn

"1 Jind released lectures insipid. " ALEXANDER VON HUMBOLDT ta LOUIS AGASSIZ, January 15, 1840 many stuff converse opposed to the e-book of lectures. The influence of the spoken be aware is particularly assorted from that of the written observe. Repeated recapitulations, which aid the listener less than­ stand, are pointless, and the overtones of speech disappear in print.

Jacques Monod's Chance and Necessity: An Essay on the Natural Philosophy of PDF

Probability and Necessity: Essay at the usual Philosophy of recent Biology (French: Le Hasard et los angeles Nécessité: Essai sur los angeles philosophie naturelle de los angeles biologie moderne) is a 1970 ebook by way of Nobel Prize winner Jacques Monod, studying the strategies of evolution to teach that existence is just the results of ordinary methods by way of "pure chance".

Additional resources for Analysis Within the Systems Development Life-Cycle. Book 3: Activity Analysis–the Deliverables

Example text

4 Source/sink A source or sink is represented by a square box. 5 Data store/entity type or group A data store is represented by two parallel lines. 6 Event A n event is represented by a triangle (inverted) and is always placed outside the scope box and may be associated with a source (if the event is source-dependent) or may be 'stand alone'; for example, stock rusts. 15 which also includes four important symbols which represent scope, 'external' activities, 'exclusive' data flows and optional data flows.

As illustrated, all the diagrams can be used to express the same content—the choice is simply one of aesthetics, simplicity of drawing and ease of presentation. I like lists because they are easy to compile, neat to look at and easy to understand. 1 Networks of activities One fundamentally important point has not been mentioned yet. Until now the implication may have been that activity decomposition produces a true 'hierarchy' or tree structure. This is not the case. If we consider what is being represented rather than the mechanics of what we are doing, we realise that in real life there are many actions performed which satisfy more than one overall purpose.

20: Data flow diagram showing entity types or groups 37 This broad grouping, which describes what the business is set up to do (its purpose), can be decomposed into a network of successively more detailed classifications of the organisation's activities. For example, in order to achieve the overall activity of banking, this can be broken down into the sub-activities of lending money (to customers), borrowing money (from central bank, government and so on), managing money, providing services to customers and so on.

Download PDF sample

Analysis Within the Systems Development Life-Cycle. Book 3: Activity Analysis–the Deliverables by Rosemary Rock-Evans

by Brian

Rated 4.74 of 5 – based on 45 votes