modeling

XML Attributes vs Elements [duplicate]

由 折月煮酒 提交于 2019-11-26 22:07:21
This question already has an answer here: XML attribute vs XML element 20 answers When should you use XML attributes and when should you use XML elements? e.g. <customData> <records> <record name="foo" description="bar" /> </records> </customData> or <customData> <records> <record> <name>foo</name> <description>bar</description> </record> </records> </customData> Ryan Taylor There is an article titled " Principles of XML design: When to use elements versus attributes " on IBM's website. Though there doesn't appear to be many hard and fast rules, there are some good guidelines mentioned in the

Automated formula construction

由 房东的猫 提交于 2019-11-26 21:03:24
问题 In a recent homework assignment, we were instructed to run 27 linear models, each time adding an additional variable (the goal was to plot the changes in R 2 vs. changes in adjusted R 2 ). I found it difficult to algorithmically create formulas like this. The code I ended up using looked like this following (note that the first column in the data frame is the dependent variable, all the rest are prospective independent variables. make.formula <- function(howfar) { formula <- c() for (i in 1

UML diagram for dependency between systems

由 笑着哭i 提交于 2019-11-26 09:55:40
问题 Which UML diagram is the best for showing dependency between our IT system and other external IT systems? For example I would like to show on diagram: system A gets data from system B system B can call some functionality from system A I\'m wondering between component diagram and sequence diagram. What do you think? 回答1: Components definitelly, and dependencies. Dependency does not go in direction of the data-flow, but from the component that "knows" other component (invokes something from it,

XML Attributes vs Elements [duplicate]

由 柔情痞子 提交于 2019-11-26 08:09:59
问题 This question already has an answer here: XML attribute vs XML element 20 answers When should you use XML attributes and when should you use XML elements? e.g. <customData> <records> <record name=\"foo\" description=\"bar\" /> </records> </customData> or <customData> <records> <record> <name>foo</name> <description>bar</description> </record> </records> </customData> 回答1: There is an article titled "Principles of XML design: When to use elements versus attributes" on IBM's website. Though

What is the difference between attribute and property? [closed]

由 自作多情 提交于 2019-11-26 06:55:32
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 5 years ago . These seem to mean the same thing. But what term is more appropriate in what context? 回答1: In general terms (and in normal English usage) the terms mean the same thing. In the specific context of HTML / Javascript the terms get confused because the HTML representation of a DOM element has
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