Edward Posted April 17, 2012 Share Posted April 17, 2012 Hi Larry, can you explain what the different is between the solid line and dashed line on the relational database diagrams. I didn't see anything mentioned on the dashed line, thought it may be way of representing relationship between key's but in some of your examples it didn't seem to follow in that particular case. Link to comment Share on other sites More sharing options...
HartleySan Posted April 17, 2012 Share Posted April 17, 2012 Please search for the word "dotted" in the following: http://unfccc.int/files/kyoto_mechanisms/registry_systems/application/pdf/itl_rfp_13_software_spec_annex_b_database_entity_relationship_diagrams.pdf Link to comment Share on other sites More sharing options...
Edward Posted April 17, 2012 Author Share Posted April 17, 2012 Thanks i want to be clear what Larry has to say about this in relation to the book i am reading. Link to comment Share on other sites More sharing options...
Larry Posted April 18, 2012 Share Posted April 18, 2012 Can you give me a specific example that I can address? 1 Link to comment Share on other sites More sharing options...
Edward Posted April 18, 2012 Author Share Posted April 18, 2012 I apologize i should of been more articulate, pg 176 chapter 6, diagram H. Why is there a dashed line on the far left side between the publishers and the books table but not between books_authors and authors. What is the different between dashed and solid line? Link to comment Share on other sites More sharing options...
Larry Posted April 18, 2012 Share Posted April 18, 2012 I think I just clicked the wrong button when creating the lines for Figure G, which then were used for Figure H. 1 Link to comment Share on other sites More sharing options...
HartleySan Posted April 19, 2012 Share Posted April 19, 2012 Haha! Problem solved, I guess. Link to comment Share on other sites More sharing options...
Edward Posted April 19, 2012 Author Share Posted April 19, 2012 I think I just clicked the wrong button when creating the lines for Figure G, which then were used for Figure H. Thanks for addressing that, I am sorry I don't want to be a pain here but on pg.174, pg.177 and pg.178 we have the diagrams with only the dashed lines. Is that an error or is there a different meaning between solid and dashed lines? Link to comment Share on other sites More sharing options...
Larry Posted April 19, 2012 Share Posted April 19, 2012 In some people's designs, they may be making a distinction between dashed and solid lines. I was using a new tool to create these figures. I don't know what I did to create the solid or the dashed line but there is no meaning intended by either. 1 Link to comment Share on other sites More sharing options...
Edward Posted April 19, 2012 Author Share Posted April 19, 2012 Well that makes it a lot easier for us then, thanks Larry Link to comment Share on other sites More sharing options...
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