How to transfer data (Entities) from one database to another

I have a system (using Entity Framework) that is deployed in various production systems and also on a quality control system. My problem is that data entry is often done only on one of those occurrences of my system (different databases).

I want to find the best way to transfer my data from one database to another database. Ids can change, as long as the relations between my objects are maintained. 98% of my data in in DB, some of it is external files, I can manage those separately, manually.

Currently we use a xml structure as a transition file. The file is then imported in the destination system, and code manually imports the entities and re-creates the data.

I'm looking for a more generic way to do this, with less code. Since all my data in stored in Entities couldn't I simply create a big L开发者_开发技巧ist and throw all my objects in there, then serialize that in some matter into an external file and finally generically import all the entities in there in my destination system? (I'll probably have to be careful in maintaining relation ids, but should be ok...)

Anyways I'm wondering if anyone would have smart approaches, I'm pretty sure I,m not the first with a similar problem.

Thanks!

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You need to get some process around this. If all environments contain the same data (unlikely) you can replicate. It is the most automatic. But a QA environ should not update production, so you have to really think this through.

If semi-automated is okay, there are tools out there you can use from a variety of vendors. I use Red Gate tools, personally, but others are also fine.

Can you set up a more automated push with EF? Sure, but the amount of time you spend is really not worth it.

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In my opinion you can check some of the following approaches:

1) Use Sql Compare or Sql Data Compare. Those tools are from Red Gate and can be found here

2) Regular backups and restores of the databases. You could, if it is an option regularly backup your most up-to-date database and restore it on the destination systems. I have no experience in automatizing this but here is a link to do that through .net.

3) You could always give it a go creating a version control system of your own. I would picture one such system selecting all records from a certain table (or all of them), deleting all records in the target database and inserting them. This seems pretty complex though, as you have to worry about relationships, data dependencies, etc.

Hope this helps in some way. Regards

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If you for some reason will not be satisfied with existing tools may be you'll want take a look at the Sync Framework and implement this functionality yourself for your very particular data bases.

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Given what you described, pushing data from One SQL Server to another for demo purposes, you should consider SQL Server Integration Services.

If you're got a simple scenario where you just move the data and objects from DB to the next you can use their built-in Wizards. If you need to do custom stuff you can build complex workflows using C# and SQL (tools you already know). Note: most of what you're going to want comes with the standard edition so if you're using express this is less interesting.

The story for Red Gate products is more compelling when you don't have SQL Server (So you have to go out and buy something) and if you are interested in finding out what the changes are between DB's (like viewing code changes in a .cs file in a source control product)