I created a Data Connection (Oracle) in my Server Explorer. It works, I can access the tables, etc...
Now when I try to create a ADO.NET Entity Data Model and I select "Generate from database", my connection doesn't display in the drop down to the "Which data connection should your application use to connect to the database". If I click on New Connection, and click to change the data source to Oracle, it's not in the list.
I'm using Visual Studio 2010 and it's an MVC4 app. Trying to use Entity Framework.
Thank you!
Related
I'm looking at upgrading our Storage Layer form Linq To Sql to EF Core 3.
I can reverse engineer the model from the database using the scaffolding command and it correctly creates FK fields who's default value is looked up using a Scalar Function called dbo.DefaultSystem()
But then I can't use EF Core to create a database from scratch because it can't scaffold programmability.
Is there, like, some kind of pre-create hook I can grab? Or better yet, a way to trigger code after the Systems table has been created.
Once Systems has been created I can just execute some SQL to create the DefaultSystem function.
I have to assume that there's logic in EF Core that knows it has to create the Systems table before it creates all the tables who have foreign keys pointing at it?
Update for comment from JDWeng
"You [create? - ed] the database first. What is your connection string? Are you connecting to a server (the server attached to an MDF file) or a LocalDb which is an MDF file?"
Source Connection String for Reverse Engineering:
#"Server=SQLDEV01\2008R2;Database=Database_Version_88;Trusted_Connection=True;"
Destination Connection String to test db.EnsureDeleted();db.EnsureCreated();
#"Server=(localdb)\mssqllocaldb;Database=LocalDevTest_Version_88;Trusted_Connection=True;"
So, the source database is hosted on a Windows Server running Sql Server 2008R2. This is our restricted schema design server which holds the design for our database. We create schema shapshots and upgrade scripts between the multiple database versions. This server is considered design gospel.
The target database is a (localdb)\mssqllocaldb which is created via EnsureCreated() from the DbContext generated by the Scaffold binaries.
I don't know much about the internals of this but according to your comment I'm just creating and connecting directly to an mdf file.
If there's nothing automatic to do this, I guess I'll have to create the database first with the System Of Record tables pre-created and configured and seeded.
I use C#, .net 4, Entity Framework and SQL Server 2012 in a project.
I have no familiarity with backup and restore from database by Entity Framework. Please help me to write restore and backup code in Entity Framework use path on textbox in put. thanks!
Using of SQL Server you usually command server to make backup or restore using path related to SQLServer process on server machine. EF has nothing to do with, although you can get path with textbox and send commands using database connection of your EF DbContext.
Relating to client, you can make some kind of backup, e.g. loading all data to DbContext and serialize it to file. But you cannot simply restore database from your deserialized DbContext due to absence of required metadata. If you really need to restore database from client data, you can create empty database using predefined SQL script or C# code generated during migration or DatabaseInitializer and then fill this database using deserialized DbContext.
I was working on a project where i made a database on sql server 2008 using visual studio 2010 and i took backup of that databse by right clicking on it in sever explorer and selecting "Publish to Provider" that creates a .sql file in my computer that i taken. Previously i formatted my pc and sql server databases are lost, so now i want to use that .sql file to recreate the database with all data, but i don't know how it can be possible.
Something i tried but it created all tables in master database but i want the database of the name i.e. stored in .sql file or specified by me.
Please help.
First Create a Database using this,
Create Database YOURDBNAME
Here, YOURDBNAME = DataBase Name
Then, Open your .sql file write this in First line of the .sql page,
Use YOURDBNAME
Now press F5, all the tables and data will be created and inserted.
You can use the SQL Server Management Objects libraries to manage all aspects of SQL Server.
SQL Server Management Objects (SMO) is a collection of objects that are designed for programming all aspects of managing Microsoft SQL Server. SQL Server Replication Management Objects (RMO) is a collection of objects that encapsulates SQL Server replication management.
From your description, however, this can be overkill. You get simply use SQL Server Management Studio (link goes to the free Express edition download), connect to the server, open a new Query Window with your SQL file and run it (F5).
I am trying to use ADO.NET Entity DATA model (edmx) to connect to Oracle, i have installed the Oracle data provider from Oracle.
But i do not see the data provider as an option when i try to add a new connection for the ADO entity data model.
However I can see the Oracle data provider when i am trying to connect to the DB using from the sever explorer in VS 2010.
Any ideas ?
i had to install this beta version to get it to work. http://www.oracle.com/technetwork/topics/dotnet/downloads/oracleefbeta-302521.html
I am building an application that requires separate SQL Server databases for each customer.
To achieve this, I need to be able to create a new customer folder, put a copy of a prototype database in the folder, change the name of the database, and attach it as a new "database instance" to SQL Server. The prototype database contains all of the required table, field and index definitions, but no data records. I will be using SMO to manage attaching, detaching and renaming the databases.
In the process of creating the prototype database, I tried attaching a copy of the database (companion .MDF, .LDF pair) to SQL Server, using Sql Server Management Studio, and discovered that SSMS expects the database to reside in
c:\program files\Microsoft SQL Server\MSSQL.1\MSSQL\DATA\MyDatabaseName.MDF
Is this a "feature" of SQL Server? Is there a way to manage individual databases in separate directories? Or am I going to have to put all of the customer databases in the same directory? (I was hoping for a little better control than this).
NOTE: I am currently using SQL Server Express, but for testing purposes only. The production database will be SQL Server 2008, Enterprise version. So "User Instances" are not an option.
The MDF has in it the table containing the physical path of all the database files, as they were on the instance it was detached from. You can overwrite the location(s) during the attach operation:
CREATE DATABASE <dbname>
ON (name=dbfilelogicalname, filename='c:\myNewPath\dbfilename.mdf'),
(name=dbfile2logicalname, filename='c:\myNewPath\dbfilename2.ndf'),
(name=dbloglogicalname, filename='c:\myNewPath\dblogfilename.ldf')
FOR ATTACH;