Creating SQL Database file And Displaying a Database

Creating SQL Database file And Displaying a Database Table in a Data. Grid. View

Basic Database Concepts • A database: is a collection of related data, organized into entities called tables that are connected together by relationships. • A Table: is a part of the database that contains related information about a certain entity (Students, Teachers, Faculties, etc. ). A table consists of fields that represent the needed information. A certain data type should be specified for each field (e. g. Student. Name "string or varchar", Credit. Hours "Int", etc. ) • Primary Key: A unique field, that shouldn't be repeated in any record, and shouldn't be null.

Basic Database Concepts

Create new windows application project

Click on add new data source option in data source window

In choose data source type dialog box select Dataset then click next

In choose your data connection dialog box click on new connection button

Select Microsoft SQL Server Database file option as a data source then click on continue button

In Add connection dialog box enter a name for the database file ex: database 1 then click on ok button

A massage box will appear to tell you that this is a new database would you like to create it? Click on yes button

Now a new database is created with a specific connection string that will be used to connect the application to this database.

Click next

Click on NO button

Click on next

Click on previous button

Click on finish button

Open server explorer then click on database 1. mdf then right click on Tables and choose Add new Table option

Add new filed "name" to the table as following

To save changes on the table click on update then Click on update database button

To change table name to "student"

Update the database then close the table

On data source window right click on database 1 Dataset then choose Configure data source with wizard then choose tables

Then choose table click finish

Drag and drop student table from data source window to the form

Run the program

Add new record then click save

Remove the record then click save

How Data Binding Works • The technique through which GUI controls are connected to data sources is known as data binding. • The IDE allows controls, such as a Data. Grid. View, to be bound to a data source, such as a Data. Set that represents a table in a database. • Any changes you make through the application to the underlying data source will automatically be reflected in the way the data is presented in the data-bound control (e. g. , the Data. Grid. View). • Likewise, modifying the data in the data-bound control and saving the changes updates the underlying data source.