I have been tasked with building an application for a Windows laptop that engineers can take out into the field where there is no internet access. Then, they will add data through a form and once they get back and have internet access, they can then hit a "Sync" button and send the data they collected to an external SQL Server database.
The database is SQL Server 2016 and the application is going to be a C# .NET desktop application. My question is what options are available for the database when there is no internet access? I don't really want to do Excel or Access. I really like SQL Server Compact but it seems dated. Is SQL Server Compact still relevant with the latest .NET Framework or is there something newer that everyone uses?
You could try creating a ssis package that syncs data between the offline database and live database.
The ssis package can be executed either as a sql server job that runs at intervals
or
from a stored procedure . Please find the below link on how to execute a package from stored procedure.
https://msdn.microsoft.com/en-us/library/jj820152.aspx
The stored procedure can then be called from inside the application.
Related
I am working on an ERP Project, using sql server for database.
Now when I deploy the project, I have to install sql server which uses a lot of storage and time is also wasted. As the client is never going to fire any query. Thus, having no need of the development environment. So, is there any option to overcome this.
Local DB is one of the option but having difficulties in configuring it. If anybody ever used it and Please help me out. Or if there's any other option please help me with that
NOTE: I am using asp.net as front end technology
I'm not sure if this is what you're trying to do, but if you want your app to connect to an SQL Server database, you will need at least the OLE DB Driver to be installed on your server.
It will allow your app to connect to an SQL Server instance, which can be running on any other machine.
In complement you could have a look at this : https://www.connectionstrings.com/
and this https://learn.microsoft.com/fr-fr/sql/connect/oledb/oledb-driver-for-sql-server?view=sql-server-ver15
I am currently developing a windows store application, I need to connect my app with sql server 2008 R2 Db, some sql classes are not working in the WinRT API, please any one suggest me on this and tell me which RDBMS I can use to connect with.
Thanks
You can't. The reason being that you can't put that kind of restriction on a store app, you should have no dependancy on an external database being available.
You can use sqlite however, and here is a guide: http://timheuer.com/blog/archive/2012/08/07/updated-how-to-using-sqlite-from-windows-store-apps.aspx
If you are wanting to connect to a database to pull data from it (as an enterprise app for example) then you can use web services as a wrapper around the database.
I installed adventure works, and I followed the instructions on this page:
How to: Create Connections to SQL Server Databases
basically nothing appears in the drop down, in step 2.
I cant even attach the database without getting an error, nor drag it to the web form.
It tells me that the database cant be attached cause it is version 705, and the server supports version 655..
Also what is teh difference between attaching the database and connecting to it?
I went to the installation center of 2008, and clicked on show installation info..I got this:
Microsoft SQL Server 2008 Setup Discovery Report
Product Instance Instance ID Feature Language Edition Version Clustered
Sql Server 2008 SQLEXPRESS MSSQL10.SQLEXPRESS Database Engine Services
1033 Express Edition 10.1.2531.0 No Sql Server
2008 SQLEXPRESS MSSQL10.SQLEXPRESS SQL Server Replication 1033 Express
Edition 10.1.2531.0 No
so I guess it is installed on my computer, but I cant access the application
You need the database to exist in an instance of SQL Server (or whatever RDBMS you so choose...but most likely, SQL Server). To do this you can do a few things: namely restore a *.bak database backup file of AdventureWorks, or you can attached the mdf and ldf files (database data and log files) to get your database online.
basically nothing appears in the drop down
Do you have an instance of SQL Server installed on your machine?
Also what is teh difference between attaching the database and connecting to it?
Attaching the database is using mdf and ldf files to get your database online ready for transactions. Connecting to the database is creating a connection between a client application and the aforementioned database. Two very different steps of the data access process.
Attaching to a database is necessary when the database file(s) are in a location other than the default location. You don't really "connect" to a specific database per se. You connect to a sql server instance which contains a list of databases on that instance (or referenced by the instance).
My course requires me to connect to an Oracle database server at the university for my project. I am provided with a url (like oracle.xyz.edu) and username and password. How can I connect to the database from Visual Studio. I have only dealt with SQL Server 2008. I don't know how to go ahead with setting up the database. I tried to install Oracle Instant Client, but could not find a setup exe to install. The instant client download zip consists of a set of files. Where can I find the steps to connect to Oracle database from VS.
Do you need to use the Oracle Instant Client? Or would it be acceptable to you to download and install the full version of the Oracle client?
The full version of the Oracle client is generally what ought to be installed on a developer machine. The Instant Client is a very slimmed down version of the client that is designed for developers to distribute along with their Windows applications on machines that do not have or need any way to access the database other than via the application. As a developer, I'd strongly recommend the full version of the Oracle client if only because it includes various additional utilities like SQL*Plus and SQL*Loader.
The full Oracle client is available for download from OTN on the same page that the database is available. For example, the Oracle 11.2 client for 64-bit Windows is a 615 MB download on the OTN site.
Don't use ODBC. Use ODP.NET (Oracle's Instant Client) Oracle Data Provider for .NET. (Read technical notes in provided link.)
I come from a linux/apache/php/mysql background. For my current project, I am forced to write web services using ASP.NET. I have installed visual studio and created an ASP.NET web service project. The web service I'm creating will use a SQL database backend. I see that visual studio installed "SQL Server Express 2008." I can see that there is a service called "SQL Server (SQLEXPRESS)" that is running. My question is, how do I run queries against this database? Where's the front end? What tool do I use to create databases and tables? Is there something else I have to install?
I feel completely lost and my google-fu fails me. There are so many different SQL products from microsoft that I can't tell what is the easiest path to just having a simple database with tables I can query from my development machine. With MySQL, I would install the MySQL database, download MySQL query browser and start firing queries at it. How can I do that with Visual Studio/SQL Server Express?
You can download SQL Server Management Studio from here. This is the GUI for working with SQL Server. It will let you create databases, tables, stored procedures, etc. as well as writing queries and manually edit data in the tables.
Aside from SQL Server Management Studio, you can use the Server Explorer tab in Visual Studio (by default on the right side, next to Solution Explorer) to add a data connection. You can do most of the most common database tasks (create/query tables, create views, etc) from there.
there's a command line tool that installs with SQL Server (all versions) called SQLCMD.exe, should be in your install path.
Visual Studio also lets you create dbs, run queries, look at table structures and data (including creating and deleting them, etc), you do that by opening your Server explorer window and making a connection to your local instance (.\SQLExpress by default).
Finally, as the other person mentioned, SQL Server Management Studio Express is a free download, and well worth the time it takes to install.