Sql-server – Clear schema from database without dropping it

entity-frameworksql server

I'm working on a school project where I have a SQL Server with a database for my team.

I already imported a local database created with Entity Framework.

Now the model has changed, table properties were added/deleted and I want to update my full database.

However, the teachers didn't gave us the create rights so dropping the whole database isn't really an option.

Now is my question, is it possible to drop all the tables currently in the database and just import the newly created one without problems? Or do I really need to drop the whole database?

Best Answer

I assume you are trying to push your changes back to the database from your entity model? If so you can do that from studio. (Right click in the entity modeler, save changes to the database.)

If you have to recreate it - you can also just change where the EF is pointing in your configuration settings and push the model out to the database if you have create permissions. Really just depends what rights you were given.

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Sql-server – With MS SQL Server are the generated constraint names predictable

No, the constraint name is completely unpredictable. If you want your names to be consistent, you can name them correctly by applying a predictable / repeatable name manually. I have no idea how you would do this in the code you have, but in T-SQL instead of:

CREATE TABLE dbo.foo(bar INT PRIMARY KEY);

CREATE TABLE dbo.blat(bar INT FOREIGN KEY REFERENCES dbo.foo(bar));

(The above end up with constraints having names like PK__foo__DE90ECFF6CF25EF6 and FK__blat__bar__1B1EE1BE.)

You would say:

CREATE TABLE dbo.foo(bar INT, CONSTRAINT PK_foo PRIMARY KEY (bar));

CREATE TABLE dbo.blat(bar INT, CONSTRAINT fk_foobar FOREIGN KEY(bar) 
  REFERENCES dbo.foo(bar));

PostgreSQL – Connecting with Entity Framework via Npgsql and C#

I recommend not using Entity Framework with anything else other than SQLSERVER. And then LINQ to SQL may be better. lightspeed was recommended to me as a better product. I personally have not used it.

Best Answer

Related Solutions

Sql-server – With MS SQL Server are the generated constraint names predictable

PostgreSQL – Connecting with Entity Framework via Npgsql and C#

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