FAQ Database Discussion Community


Dataflow diagram representing external files

diagram,dataflow,dataflow-diagram
I'm designing a dataflow diagram and I reached a point where I don't know if I have to represent the external files that my application loads at the beggining (it's automatic, there's no entity interaction). I represented it as a data store, am I right? I guess that data store...

Enterprise Architect - Cancel Connectors Bridges

uml,diagram,enterprise-architect,tool-uml
This might be a silly question but still - when two connectors cross each other the EA creates a bridge. Any way to cancel that so it'll basically be two straight lines crossing? Thanks....

Reading a database diagram

mysql,database,diagram
I've been trying to figure out how to get the products that match a certain category id but I have been unable to figure out how to move from category to products. How would a query that basically selects all products that match a certain category id look? ...

How to generate dependency graph with text

graph,diagram,utilities
Is there a simple online tool that will generate a dependency graph (boxes linked by arrow lines) based on text input like: A -> B Much like this one: www.websequencediagrams.com (It generates a sequence diagram)...

Cumulative Diagrams in R with two y-axes

r,diagram
Using R, I would like to draw the following cumulative diagram from a given vector with values and one vector of frequencies. How can I do so and how can I add a second y-axis? I tried hist() and barplot() but did not succeed... (In real the vector is much...

UML - Use Case Diagram choices

uml,diagram,scenarios
I have heard conflicting things about this and just wanted to clarify. I have always thought that when constructing a Use Case Diagram, I only include the activities that will be carried out by the system. For example, if it were a bank atm, "User depositing money" would be included,...

Where's table info tab on MySQL Workbench EER?

mysql,mysql-workbench,diagram
When I select a table on EER Diagram on MySQL Workbench, the first tab shown is "Columns" instead of "Table" information where I can add comments to the table, change the engine, etc. Where's the "Table" tab? I've seen this print screen from another user and it's clearly that a...

Creating a WPF divided diagram

wpf,canvas,diagram
So there's this tutorial about creating a diagram in WPF. http://www.codeproject.com/Articles/24681/WPF-Diagram-Designer-Part I've read it, and still studying it to understand it completely. At the end of this tutorial, you can basically add shapes, move/rotate/scale them, and since they are created in a vector form, they are keeping their resolutions, there...

Represent/illustrate communication between two seperate programs in UML?

interface,uml,communication,diagram
Lets say i have a Android app that communicates with a desktop program via Bluetooth sockets. pseudo code: On Android: class sendToDesktop{ sendMsg(String msg){ socket.send(uuid, msg) } } On Desktop: class Read{ getMsg(){ return socket.read(uuid, msg) } } So how do i represent the relationship between these seperate programs in...

Start/stop d3.force dynamically

javascript,jquery,d3.js,diagram
Say I have simple D3.js force diagram like in this example here . I know all of the magic of force is happening, mainly, in this function here: function tick() { path.attr("d", function(d) { var dx = d.target.x - d.source.x, dy = d.target.y - d.source.y, dr = Math.sqrt(dx * dx...

How to move a diagram between projects?

uml,diagram,enterprise-architect
I'm a very basic user of EA. I never had the time to learn its terminology or features and therefore i only use it to create pretty basic (yet rather big) diagrams. Unfortunately my EA project file was updated by another person and now i need to move a diagram...

How to draw the curves in an energy diagram in R?

r,diagram,curve,energy
I wrote following R script: #energy diagram x <- c(0.1, 0.3, 0.5, 0.7, 0.9 ) #chosen randomly, reaction axis y <- c(-5.057920, -5.057859, -5.057887,-5.057674, -5.057919 ) #energy of the educt, intermediate, transtition states and product plot(x,y, type="p", xlim=c(0,1), ylim=c(-5.058,-5.0575), xlab="reaction axis", ylab=expression(paste(E[el] ," / ",10^6," ",kJ/mol)), xaxt="n" #hide x-axis )...

Activity Diagram for Game Functions/Interaction

design-patterns,uml,diagram,software-design,activity-diagram
I am creating an activity diagram for a game, although I am not sure if I am using the correct diagram. Is this the correct diagram to represent the functions of the game? Functions: The aim of the game is for the character to move around the screen to collect...

What does the ā€œCā€ symbol means in EER diagrams?

database-design,diagram,eer-model
What does the "C" symbol that exists for example in disjoint in EER diagrams mean. I don't ask what disjoint mean I'm just interested in what the "C"-symbol means? I assume that it's not a union? So what is it then? http://web.cse.ohio-state.edu/~gurari/course/cse670/cse670Ch16.xht...