Suggested Practices in .NET

Draw PDF-417 2d barcode in .NET Suggested Practices

Suggested Practices
Painting PDF-417 2d Barcode In Visual Studio .NET
Using Barcode creator for VS .NET Control to generate, create PDF-417 2d barcode image in .NET applications.
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Reading PDF 417 In .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
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Before doing the following suggested practices, skip forward in this book to read 5, Working with Transact-SQL. This chapter familiarizes you with the basics of adding data to a table as well as retrieving it. Understanding these functions is important for performing the practice tasks, which will help you see how the various table structures interact with data.
Painting Barcode In .NET Framework
Using Barcode creation for .NET framework Control to generate, create barcode image in Visual Studio .NET applications.
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Bar Code Decoder In VS .NET
Using Barcode reader for .NET Control to read, scan read, scan image in .NET applications.
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Creating Tables
PDF 417 Drawer In Visual C#
Using Barcode maker for VS .NET Control to generate, create PDF417 image in .NET applications.
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Print PDF-417 2d Barcode In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create PDF417 image in ASP.NET applications.
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Practice 1 Insert some data into the StateProvince, Country, and AddressType tables. Retrieve the data from the table and inspect the identity column. Change the seed, increment, or both for the identity column and insert more rows. Retrieve the data from the table. Are the values in the identity column what you expected Practice 2
PDF 417 Creator In VB.NET
Using Barcode maker for .NET framework Control to generate, create PDF 417 image in .NET framework applications.
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EAN / UCC - 13 Drawer In .NET Framework
Using Barcode maker for VS .NET Control to generate, create EAN13 image in VS .NET applications.
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Concatenate the City, StateProvince, and PostalCode columns together. Change the data type of the resulting new column from a varchar to a char. Execute the same query you used in Practice 1. Why do the results differ
UPC Code Drawer In .NET Framework
Using Barcode creation for .NET framework Control to generate, create UPC-A image in VS .NET applications.
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PDF417 Creator In .NET Framework
Using Barcode drawer for .NET framework Control to generate, create PDF417 image in .NET applications.
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Creating Constraints
Bar Code Maker In VS .NET
Using Barcode drawer for .NET framework Control to generate, create barcode image in VS .NET applications.
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Paint Ames Code In VS .NET
Using Barcode generation for VS .NET Control to generate, create ABC Codabar image in .NET framework applications.
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Practice 1
Decode Code 3 Of 9 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
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Draw Code 128C In None
Using Barcode generator for Microsoft Word Control to generate, create Code 128 Code Set A image in Office Word applications.
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Insert some data into the CustomerAddress table. What happens when you do not specify an AddressType What happens when you do not specify either a Country or StateProvince Change the value in one of the foreign key columns to another value that exists in the referenced table. What happens Change the value to something that does not exist in the referenced table. What happens Is this what you expected Try to insert a row into the Customer table that has a negative value for the credit line. Are the results what you expected
Draw Barcode In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
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Barcode Reader In C#.NET
Using Barcode Control SDK for VS .NET Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
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Practice 2
Drawing DataMatrix In Java
Using Barcode maker for BIRT Control to generate, create Data Matrix ECC200 image in Eclipse BIRT applications.
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Decode Data Matrix 2d Barcode In C#.NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
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Practice 3 Practice 4
Decode Data Matrix In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
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Barcode Creation In Objective-C
Using Barcode creation for iPhone Control to generate, create barcode image in iPhone applications.
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Insert a row into the Customer table without specifying a value for the outstanding balance. Retrieve the row. What are the values for the outstanding balance and available credit Are they what you expected
3 Review
Take a Practice Test
The practice tests on this book s companion CD offer many options. For example, you can test yourself on just the content covered in this chapter, or you can test yourself on all the 70-431 certification exam content. You can set up the test so that it closely simulates the experience of taking a certification exam, or you can set it up in study mode so that you can look at the correct answers and explanations after you answer each question.
MORE INFO
Practice tests
For details about all the practice test options available, see the How to Use the Practice Tests section in this book s Introduction.
4
Creating Indexes
As you saw in 3, Creating Tables, Constraints, and User-Defined Types, creating tables is the first step of building a useful database. You then need to add data to the tables. However, if you never retrieve the data in the table, you are simply wasting storage space. SQL Server does not need to have indexes on a table to retrieve data. It can simply scan a table to find the piece of data that is requested. However, most organizations store massive amounts of data in a table and need to be able to retrieve data instantly. To allow rapid data retrieval while ensuring that performance does not decline as users add rows to a table, you need to add indexes to your tables. Indexes are not a new concept or strictly a database concept. We use indexes every day. At the back of this book, you will find an index in printed form. If you wanted to read about full-text indexes to prepare for your exam, you could find the information in two different ways. You could open this book, start at page 1, and scan each page until you found the information you needed. Or you could turn to the index at the back of the book, locate full-text indexing, and then go directly to the corresponding page or pages that discuss this topic. You find the information either way, but using the index is much more efficient. In this chapter, you will explore how SQL Server builds and uses indexes to ensure fast data retrieval and performance stability. You will then learn how to build clustered, nonclustered, and covering indexes on your tables to achieve the optimal balance between speed and required index maintenance overhead.
Exam objectives in this chapter:
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