Beginning C# 2005 Databases From Novice to Professional phần 5 doc
Beginning C# 2005 Databases From Novice to Professional phần 5 doc
... optimal way.
■T
ip
In general,
tr
y to exploit SQL,
ra
ther than code C# procedures, to get the data you need from the
database. Database servers are optimized to perform selections and sorts, as ... ADAPTERS212
777Xch08final.qxd 11/18/06 2: 45 PM Page 212
How It Works
You replace a console display loop with a method call to write the XML file:
// extract dataset to XML file
d...
Beginning C# 2005 Databases From Novice to Professional phần 1 docx
... Pedersen, and Jon Reid
Beginning
C# 20 05
Databases
From Novice to Professional
CYAN
MAGENTA
YELLOW
BLACK
PANTONE 123 CV
ISBN 1 -59 059 -777-X
9 78 159 0 59 7774
53 999
6 89 253 59 777 4
Companion
eBook ... 0.998" 52 8 page count
BOOKS FOR PROFESSIONALS BY PROFESSIONALS
®
Beginning C# 20 05 Databases:
From Novice to Professional
Dear Reader,
Thousands...
Beginning C# 2005 Databases From Novice to Professional phần 8 doc
... you’ll try to insert an invalid new customer and try to delete an
undeletable one.
1. Run sp_Trans_Test to add customer a and delete customer ALFKI. The result should
appear as in Figure 14 -5.
2. ... unit
• Whenever a change to one table requires that other tables be kept consistent
359
CHAPTER 14
■ ■ ■
777Xch14final.qxd 11/18/06 2: 35 PM Page 359
5. Add a using directive to F...
Beginning C# 2005 Databases From Novice to Professional phần 2 pot
... map to a
single C# type,
decimal (see Table 3-8).
Table 3-8. T-SQL Money Data Types
SQL Data Type C# Type Description
money decimal Values from -922,337,203,6 85, 477 .58 08 through
922,337,203,6 85, 477 .58 07
smallmoney ... 49
We’ll only point out a few things to help you get started:
1. To open BOL, click Start ➤ All Programs ➤ Microsoft SQL Server 20 05 ➤ Docu-
mentation a...
Beginning C# 2005 Databases From Novice to Professional phần 3 ppsx
... members that provide
95
CHAPTER 5
■ ■ ■
777Xch05final.qxd 11/18/06 3:34 PM Page 95
// create command (with both text and connection)
string sql = @"
select
count(*)
from
employees
";
SqlCommand ... connecting to a local SSE instance, but it
might happen in trying to connect to a SQL Server instance on another server.
•
A hardware problem: Again, this is unlikely if you’...
Beginning C# 2005 Databases From Novice to Professional phần 4 potx
... a
bucket, ready to be filled with water, but it needs an external pipe to let the water in.
In other words, the dataset needs a data adapter to populate it with data and to sup-
port access to the data ... Page 153
Summary
In this chapter, you used data readers to perform a variety of common tasks, from sim-
ply looping through single result sets to handling multiple result s...
Beginning C# 2005 Databases From Novice to Professional phần 6 ppsx
... WOLZA’s city back to Warszawa and
deleting customer
zzz. Click Save Data to propagate the changes to the database.
Once again, you didn’t write any code to access
Customers, not even to perform navi-
gation ... new row. To keep things very simple, just enter zzz for both the customer
and company names. Change the city for customer WOLZA from
Warszawa to
Gdansk. Now click th...
Beginning C# 2005 Databases From Novice to Professional phần 7 ppsx
... a Stored Procedure with an
Output Parameter
Output parameters are typically used to pass values between stored procedures, but
sometimes they need to be accessed from C#, so let’s write a stored ... this chapter, we cover:
• How to create, modify, and delete stored procedures in SSMSE
• How to use stored procedures in C# programs
Creating Stored Procedures
Stored procedures can...
Beginning C# 2005 Databases From Novice to Professional phần 9 ppsx
... 15- 8 to class Form1.
CHAPTER 15 ■ WORKING WITH ADO.NET EVENTS 393
777Xch15final.qxd 11/18/06 2:34 PM Page 393
1. Insert the code in Listing 15- 5 into the click event handler for the third button.
Listing ... to generate XML from tables with T-SQL’s
TO XML clause
• How to query XML documents with T-SQL’s
OPENXML function
• How to store and retrieve XML documents using the
xml...
Beginning C# 2005 Databases From Novice to Professional phần 10 potx
... xmltest
declare @xdoc xml
select
@xdoc = xdoc
from
xmltest
where
xid = 2
exec xml2tbl @xdoc
CHAPTER 17 ■ USING XML 452
Figure 17-7. Viewing an XML document
777Xch17final.qxd 11/18/06 2:32 PM Page 452
How ... method, 156
G
etOr
dinal method, 156
ordinal indexers, 1 45 149
R
ead method, 1 45
using typed accessor methods
, 150
DataRelation objects, 67
D
ataRow class, System.Data namespac...
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