qr code generator c# Lesson Summary in C#

Drawer QR Code in C# Lesson Summary

Lesson Summary
Generating QR Code In Visual C#
Using Barcode maker for VS .NET Control to generate, create QR Code 2d barcode image in .NET applications.
www.OnBarcode.com
Recognize QR Code 2d Barcode In Visual C#.NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Creating tables is about more than just defining columns. It is very important to choose the right data type and to implement data integrity. You need to know the details of how the different data types behave before you can use them correctly. Data integrity needs be a part of your table definition from the beginning to make sure that you protect your data from faults.
Barcode Printer In C#
Using Barcode generation for VS .NET Control to generate, create bar code image in .NET framework applications.
www.OnBarcode.com
Bar Code Scanner In Visual C#
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Tables, Data Types, and Declarative Data Integrity
QR Code ISO/IEC18004 Generation In .NET
Using Barcode printer for ASP.NET Control to generate, create QR Code ISO/IEC18004 image in ASP.NET applications.
www.OnBarcode.com
Printing QR-Code In .NET Framework
Using Barcode printer for VS .NET Control to generate, create QR Code JIS X 0510 image in .NET framework applications.
www.OnBarcode.com
Pr actice
Encode QR Code In VB.NET
Using Barcode generator for .NET Control to generate, create QR Code image in VS .NET applications.
www.OnBarcode.com
2D Barcode Creator In C#
Using Barcode maker for VS .NET Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
www.OnBarcode.com
creating tables and Data types
USS Code 128 Generator In Visual C#.NET
Using Barcode encoder for .NET Control to generate, create Code 128C image in .NET applications.
www.OnBarcode.com
Paint EAN-13 Supplement 5 In Visual C#
Using Barcode creation for .NET Control to generate, create EAN-13 image in .NET applications.
www.OnBarcode.com
In this practice, you create tables and data types and modify existing tables. Because the exercises build sequentially, it is important to do them in the order specified.
Create GTIN - 12 In Visual C#
Using Barcode printer for VS .NET Control to generate, create UCC - 12 image in VS .NET applications.
www.OnBarcode.com
Code11 Generator In Visual C#.NET
Using Barcode drawer for VS .NET Control to generate, create Code11 image in .NET framework applications.
www.OnBarcode.com
e xercise 1
QR-Code Recognizer In Visual C#.NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
Generating UCC - 12 In None
Using Barcode generation for Online Control to generate, create GS1 128 image in Online applications.
www.OnBarcode.com
Create a New Table
Code128 Maker In Java
Using Barcode generator for Java Control to generate, create USS Code 128 image in Java applications.
www.OnBarcode.com
Decoding GS1 - 12 In .NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
In this exercise, you create a table that can store customer information.
Generate EAN 13 In None
Using Barcode encoder for Microsoft Excel Control to generate, create European Article Number 13 image in Office Excel applications.
www.OnBarcode.com
Printing Barcode In None
Using Barcode creation for Online Control to generate, create bar code image in Online applications.
www.OnBarcode.com
1. 2.
Matrix Barcode Generator In VS .NET
Using Barcode creation for ASP.NET Control to generate, create Matrix Barcode image in ASP.NET applications.
www.OnBarcode.com
Linear 1D Barcode Generation In VB.NET
Using Barcode generator for VS .NET Control to generate, create Linear 1D Barcode image in .NET applications.
www.OnBarcode.com
Open Microsoft SQL Server Management Studio (SSMS) and connect to an instance of SQL Server 2008. In a new query window, type and execute the following SQL statements to create the TestDB database and the Test schema:
CREATE DATABASE TestDB; GO
USE TestDB; GO
CREATE SCHEMA Test; GO
In the query window, create a new table with the following properties:
n n n
It should be named Customers. It should exist in the Test schema. It should have the following columns:
CustomerId, which is a whole number between 1 and 100,000. This column should also be given increasing values automatically. The first value should be 1,000, and then each subsequent row should be given a new value increased by 1. You should use the data type that uses the minimum storage space required. Name, which is a string that can contain Unicode characters and be up to 70 characters long. CreatedDateTime, which is the date and time when the customer was added to the database. CreditLimit, which is an exact numeric value that must allow up to five decimals and values less than 10,000,000.
All columns except the CustomerId column should allow NULL values. The correct statement follows but don t look at it before you have tried to create the table yourself.
Lesson 1: Working with Tables and Data Types
Type, highlight, and execute the following statement:
CREATE TABLE Test.Customers ( CustomerId INT IDENTITY(1000, 1) NOT NULL ,Name NVARCHAR(70) NULL ,CreatedDateTime DATETIME2 NULL ,CreditLimit DECIMAL(12,5) NULL );
e xercise 2
Create New Data Types
In this exercise, you create two new data types that can be used in a database application to minimize errors when using different data types for the same type of data.
1. 2.
If necessary, open SSMS and connect to the appropriate instance of SQL Server 2008. In a new query window, type and execute the following SQL statement to use the TestDB database:
USE TestDB;
In the query window, create a new data type with the following properties:
n n n
It should be called NAME. It should exist in the Test schema. It should be a string that can contain Unicode characters and be up to 70 characters long.
The correct statement follows but don t look at it before you have tried to create the data type yourself. Type, highlight, and execute the following statement:
CREATE TYPE Test.NAME FROM NVARCHAR(70);
In the query window, create a new data type with the following properties:
n n n
It should be named CURRENCYVALUE. It should exist in the Test schema. It should be an exact numeric value that must allow up to five decimals and values up to 999,999,999.99999.
The correct statement follows but don t look at it before you have tried to create the data type yourself. Type, highlight, and execute the following statement:
CREATE TYPE Test.CURRENCYVALUE FROM DECIMAL(14,5);
e xercise 3
Modifying an Existing Table
In this exercise, you modify the table that you created in Exercise 1 to use the data types that you created in Exercise 2.
Tables, Data Types, and Declarative Data Integrity
1. 2.
If necessary, open SSMS and connect to the appropriate instance of SQL Server 2008. In a new query window, type and execute the following SQL statement to use the TestDB database.
USE TestDB;
In the query window, modify the Test.Customers table with the following changes:
Modify the Name column to use the Test.NAME data type and to not allow NULL values. Modify the CreditLimit column to use the Test.CURRENCYVALUE data type. Modify the CreatedDateTime column to not allow NULL values.
The correct set of statements follows but don t look at it before you have tried to modify the table yourself. Type, highlight, and execute the following statements:
ALTER TABLE Test.Customers ALTER COLUMN Name Test.NAME NOT NULL;
ALTER TABLE Test.Customers ALTER COLUMN CreditLimit Test.CURRENCYVALUE NULL;
ALTER TABLE Test.Customers ALTER COLUMN CreatedDateTime DATETIME2 NOT NULL;
Copyright © OnBarcode.com . All rights reserved.