uml - Use case diagram validation -

-

i know if following use case diagram correct, , if can improved. context e-learning application development.

enter image description here

the business rules follows:

  1. all actors can check number of posts per person
  2. only manager , lecturer can check density of words group
  3. only manager , lecturer can check density of words used in contribution posts
  4. all actors can print results
  5. the developer develop «elaborate , design of number of posts function», «elaborate , design of words used in contributions posts function» , «elaborate , design of words used in contributions posts function» functions respectively allow user check the «number of posts per person», «density of words group» , «density of words used in contribution posts».
  6. the actors must logged.
  7. the sub-independant software aplication empacked use cases takes place. login use case take place on parent «discussion forum».
  8. the developer should left side of use case diagram given lack of space put right side of picture. thank you.

following observations:

  • login not use case @ all. remove it.
  • sub-independent software not actor there no use case it. if there some, name not mean (it firmware of tooth brush).
  • the developer ucs far complex real use cases.
  • display , print no ucs. seem try functional decomposition here. wrong.
  • computation not use case @ all.
  • the connectors needs tidy. can hardly see connected were.
  • the check ucs hardly ucs. value check bring?

i recommend read bittner/spence or cockburn. 1 is, sorry say, bin.


Comments

Post a Comment

Popular posts from this blog

javascript - Chart.js (Radar Chart) different scaleLineColor for each scaleLine -

-
Image
i try , create radar chart using chart.js has various colours each scaleline, or coloured between scalelines. wondering if possible? from: to: i have working graph, though there doesn't seem method change individual scale lines. kind regards leigh you can extend radar chart type this, so chart.types.radar.extend({ name: "radaralt", initialize: function (data) { chart.types.radar.prototype.initialize.apply(this, arguments); var originalscaledraw = this.scale.draw; var ctx = this.chart.ctx; this.scale.draw = function () { var linewidth = this.linewidth; // bypasses line drawing in originalscaledraw this.linewidth = linewidth; originalscaledraw.apply(this, arguments); ctx.linewidth = this.linewidth; var scale = this; // draw chart.helpers.each(scale.ylabels, function (label, index) { // color of ...
Read more

apache - Error with PHP mail(): Multiple or malformed newlines found in additional_header -

-
suddenly have started receiving above error without changes having been made script. host 1and1 (i know...) the script still works fine on different server, , suspicion there must have been server config change has lead this, although hosts plead ignorance. there's no information on above error @ in google can find - have ideas? server running apache if helps. had similar problem. came out of blue. no php code changed. what changed: php upgraded 5.5.25-1 5.5.26. a security risk in php mail() function has been fixed , newlines in additional_headers allowed no more. because newlines mean: starts email message (and surely don't want inject newlines through headers followed evil message). what have worked fine, e.g. having newlines after headers or passing whole message additional_headers , function no more. solution : sanitize headers. no multiple newlines in additional_headers argument. these count "multiple or malformed newlines":...
Read more

android - Go back to previous fragment -

-
btw second fragment. appear once press button in first fragment. in fragment, if press button on phone, go previous fragment. need guys. in advance. public class listalldoctorfragment extends fragment { button close; @nullable @override public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) { view view = inflater.inflate(r.layout.listalldoctor, container,false); close = (button) view.findviewbyid(r.id.button); close.setonclicklistener(new view.onclicklistener() { @override public void onclick(view view) { android.app.fragmentmanager fm = getfragmentmanager(); fragmenttransaction ft = fm.begintransaction(); shit f2 = new shit(); ft.add(r.id.content_frame, f2); ft.addtobackstack(null); ft.commit(); } }); return view; } } assuming want g...
Read more