design - Is it worth it to model applications with UML/other diagrams? -


i mean uml diagrams method works viable. had subject @ university modelling uml , seemed more effort actual benefit realise might because i've never created huge complex system. worth while , types of diagrams/methods usually* best?

*of course, many times concrete tools need chosen concrete problems maybe there patterns.

firstly

that clever uml question in stackoverflow see far :-)

it seems have no uml fever :-) welldone ...

check following link , read grady booch comment @ end of paper death uml fever

secondly

mda (model driven architecture) - executable uml utopia now. have limited area such system can modeled state machines etc. tools , techniques not mature enough.

so still dream produce diagrams producing working software "abracadabra" [ tool vendors still try sell ]

finally

code [source code] still king.our actual models not uml or other diagrams, our real models source code write , execution. if use old analogy real architect's blueprints not uml or other diagrams, blueprints map our source code.

so modeling bad? death?

of course not dead , bad. not practical-efficient-effective model whole systems on table coding laborious activity.

so do?

uml , other diagrams give visual thinking tools. apply difficult-tricky part of design explore alternatives ,to judge design , communicate design ideas others.do not apply whole system, every details.

which diagrams best?

depends on context. drawing uml diagram not free painting activity. if develop uml diagram should have purpose-reason : thinking problem, communicating ideas team members, try judge design, explore alternative designs etc.

but careful understand system should know dynamic behavior static structures[ classes , structural relationships in class diagram]. not forget use dynamic behavior diagrams [ such sequence diagrams show messaging between components ] when necessary.


Comments

Post a Comment

Popular posts from this blog

php - cannot display multiple markers in google maps v3 from traceroute result -

i'm newbie in php mysql , google maps v3. have problems in google maps v3. made traceroute web based , map traceroute's result in google maps v3 final project of college education. have try many tutorials didn't work. have tried tutorials in forum nothing worked. problem cannot display multiple markers got location data database. maybe because i'm newbie , not know how do. confuse looping show markers. here code <?php error_reporting(e_all ^ (e_notice)); ini_set('max_execution_time', 360); $enable_log_user = false; global $ip, $host_name, $host_ip; $host = @$_post['host']; $trace = @$_post['trace']; $self = $_server['php_self']; include("phpsqlajax_dbinfo.php"); $connection = mysql_connect ('127.0.0.1', $username, $password); if (!$connection) { die('not connected : ' . mysql_error());} $db_selected = mysql_select_db($database, $connection); if (!$db_selected) { die ('can\'t use db : ...
Read more

c# - DetailsView in ASP.Net - How to add another column on the side/add a control in each row? -

i have detailsview control on page used edit various fields of record, works in respect. i looking way add 1 column (and if works, why not more) right, absolutely read-only, show same fields of record comparison purposes. i aware there no obvious way such thing out of box detailsview . have looked other controls (transposed gridview , recommended formview , listview ), nothing satisfies. have special data binding setup using detailsview , can't out of without losing features. anyone on how "hack in" additional columns (for display only) on detailsview ? the solution have now, use second detailsview , visible set false in aspx. in code, make sure databind hidden detailsview hosts data third column first, initial detailsview named itemdetails . and in item created event, pass third column html rendering of hidden controls (in last code block) : protected void itemdetails_itemcreated(object sender, eventargs e) { if (dataite...
Read more

javascript - firefox memory leak -

i have following script (i use raphaeljs also) draws circle, waits 1 second, draws circle again, etc (you can copy paste - functional, need include raphael raphaeljs.com): <div id="holder"> </div> <script src="raphael.js" type="text/javascript"></script> <script> var paper = raphael(10, 50, 320, 200); var rad = math.pi / 180; var finangle = 0; function sector(cx, cy, r, startangle, endangle, params) { var x1 = cx + r * math.cos(-startangle * rad), x2 = cx + r * math.cos(-endangle * rad), y1 = cy + r * math.sin(-startangle * rad), y2 = cy + r * math.sin(-endangle * rad); return ["m", cx, cy, "l", x1, y1, "a", r, r, 0, +(endangle - startangle > 180), 0, x2, y2]; } var path = sector(100,100,50,0,180); var arc = paper.path(path); function draw() { path = sector(100,100,50,0,finangle); ...
Read more