topic Philosophical modeling question - types/aspects/future migrations in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279704#M232834 <HTML><HEAD></HEAD><BODY><SPAN>We are attempting to avoid any duplication of data in our aspects.&nbsp; So we have a lot of small aspects (10-12) and then a few (7-8) types that use various combinations of the aspects.</SPAN><BR /><BR /><SPAN>Here's an example:</SPAN><BR /><SPAN>BaseType - mandatory aspect BaseAspect</SPAN><BR /><SPAN>Types 1,2,3 all are subtypes of BaseType</SPAN><BR /><SPAN>Type1 has mandatory aspects: aspectA, aspectB, aspectC, aspectD</SPAN><BR /><SPAN>Type2 has mandatory aspects: aspectA, aspectD</SPAN><BR /><SPAN>Type3 has mandatory aspects:&nbsp; aspectB, aspectC</SPAN><BR /><BR /><SPAN>This seems pretty brilliant to me :-), but my boss keeps freaking me out saying…"then one day we'll migrate to different types" or bring in data from several repos and migrate the aspect data into new aspects…</SPAN><BR /><BR /><SPAN>From what I read declaring a type is an irrevocable act.&nbsp;&nbsp; If you change your mind about the document's type you'd have to upload it again to change it?&nbsp; Or is there some way to clone the document and re-type it?&nbsp; And then maybe have a script transfer some of the metadata into the new aspects?</SPAN><BR /><BR /><SPAN>Please advise…I see people saying "your model is WRONG if you have to change it", but if I could tell the future I'd buy a lottery ticket.&nbsp; Of course, things will change, so we have to make some kind of plan.&nbsp; If I were to give up types entirely could I group the aspects using some other means?</SPAN><BR /><BR /><SPAN>Appreciate any advice from folks who actually use Alfresco in a large company with lots of data!&nbsp;&nbsp; Based on this forum I'm not convinced there are that many of those people - but maybe their code always works and they don't need the forum :-).</SPAN><BR /><BR /><BR /></BODY></HTML> Thu, 21 May 2015 19:15:53 GMT ddelapasse 2015-05-21T19:15:53Z Philosophical modeling question - types/aspects/future migrations https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279704#M232834 We are attempting to avoid any duplication of data in our aspects.&nbsp; So we have a lot of small aspects (10-12) and then a few (7-8) types that use various combinations of the aspects.Here's an example:BaseType - mandatory aspect BaseAspectTypes 1,2,3 all are subtypes of BaseTypeType1 has mandatory as Thu, 21 May 2015 19:15:53 GMT https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279704#M232834 ddelapasse 2015-05-21T19:15:53Z Re: Philosophical modeling question - types/aspects/future migrations https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279705#M232835 <HTML><HEAD></HEAD><BODY><SPAN>Looks fine to me.&nbsp;&nbsp; But obviously you know your domain.&nbsp; </SPAN><BR /><BR /><SPAN>If in future you do need to migrate to different types then that is a data migration exercise.&nbsp;&nbsp; And can't be avoided.&nbsp;&nbsp;&nbsp;&nbsp; But if your data model is correct then you shouln't really have a big problem.&nbsp;&nbsp; </SPAN><BR /><BR /><SPAN>If your data models are wildly different then that will be harder.</SPAN><BR /><BR /><SPAN>One final comment, consider using optional aspects as well as mandatory ones.</SPAN></BODY></HTML> Thu, 21 May 2015 21:16:06 GMT https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279705#M232835 mrogers 2015-05-21T21:16:06Z Re: Philosophical modeling question - types/aspects/future migrations https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279706#M232836 <HTML><HEAD></HEAD><BODY><SPAN>I don't see how migration is possible.&nbsp; If I decide that Type2 should be split into new types: Type5 &amp; Type6, is that possible without downloading all the data and reloading it?&nbsp; </SPAN></BODY></HTML> Fri, 22 May 2015 12:30:17 GMT https://connect.hyland.com/t5/alfresco-archive/philosophical-modeling-question-types-aspects-future-migrations/m-p/279706#M232836 ddelapasse 2015-05-22T12:30:17Z