querying data asynchronously with message queuing
Tài liệu Querying Data Asynchronously with Message Queuing docx
Ngày tải lên :
14/12/2013, 18:16
... Send a message with the customer DataSet to the queue.
mq.Send(ds, customerId);
[ Team LiB ]
Recipe 2.22 Querying Data Asynchronously with Message Queuing
Problem
You want to asynchronously ... = new SqlDataAdapter(sqlText,
ConfigurationSettings.AppSettings["Sql_ConnectString"]);
// Fill the Customer table in the DataSet with customer data.
DataSet ds = new DataSet( ... 0, 1));
}
catch(MessageQueueException ex)
{
resultTextBox.Text = ex .Message;
return;
}
// Create the customer DataSet from the message body.
DataSet ds = (DataSet)msg.Body;
...
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Updating Data Asynchronously Using Message Queuing
Ngày tải lên :
20/10/2013, 12:15
... Updating Data Asynchronously Using Message Queuing
Problem
You need to asynchronously update data on a database on system that is not always
connected.
Solution
You must use message queuing ... Refresh the DataSet underlying the DataGrid.
ds = (DataSet)msg.Body;
dataGrid.DataSource = ds.Tables[CUSTOMERS_TABLE].DefaultView;
MessageBox.Show("Retrieved and loaded refreshed data. ", ... TimeSpan(0,0,1));
}
catch(MessageQueueException ex)
{
MessageBox.Show("ERROR: " + ex .Message, "MessageQueue Receive",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return;...
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Querying Data in the Framework
Ngày tải lên :
03/10/2013, 00:20
... single-pass data reader, EntityDataReader. What is missing is the data adapter
with its capability to move incoming data into a DataTable or DataSet instance. Considering
all the other data- manipulation ... Framework data can be accessed within your
software and your business logic.
Dwonloaded from: iDATA.ws
Dwonloaded from: iDATA.ws
Chapter 15 Querying Data in the Framework
263
Retrieving Entity Data ... access data based in an entity model
The Entity Framework (EF) is a markedly different way of interacting with data traditionally
found in relational databases and similar external data stores. With...
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Tài liệu Module 7: Universal Data Access with ADO 2.5 docx
Ngày tải lên :
21/12/2013, 19:15
... Data Access with ADO 2.5
Using ADO Objects
!
Connection
$
Active session with a data source
!
Command
$
Command execution specific to data source
!
Recordset
$
Records returned from a data ... Universal Data Access with ADO 2.5 1
#
##
#
Overview
!
Using ADO 2.5
!
Retrieving Data from a Database
!
Lab 7.1: Using ADO Commands Efficiently
!
Accessing Web Data
!
Lab 7.2: Accessing Data ... " ;DATA SOURCE=HTTP://DataServer/Sales/"
Module 7: Universal Data Access with ADO 2.5 33
Or you can specify a URL by using a connection string:
objCon.Open "URL=HTTP://DataServer/Sales/"...
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Tài liệu Updating a Data Source with Data from a Different Data Source doc
Ngày tải lên :
21/01/2014, 11:20
...
Recipe 4.7 Updating a Data Source with Data from a Different Data Source
Problem
You want to update a data source using changes made to another data source for data
replication or auditing ... apply the changes to a second
data source using its DataAdapter; the DataSet for the second data source is
reloaded. Finally, the first data source is updated with the changes.
The C# code ... MessageBox.Show("ERROR: " + ex .Message, "Fill Destination",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
Discussion
The ADO.NET DataSet contains data and schema information within its contained...
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Tài liệu Querying Data pptx
Ngày tải lên :
21/01/2014, 15:20
... browsing the data.
Optimizing Data Access
In this chapter, you have been using a SqlDataSource control to connect to the database
and fetch the data. Behind the scenes, the SqlDataSource control ... creates a DataSet. When
you bind a Web Server Data control such as GridView to a data source, Visual Studio
2005 generates code that populates the DataSet and displays it in the data control.
DataSets ...
display data rather than modify it, using a DataSet may be too cumbersome a solution.
The SqlDataSource control has a property called DataSourceMode which you can set to
DataSet (the default) or DataReader....
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Tài liệu Wiley - Data Mining with Microsoft SQL Server 2008 (2009)01 pdf
Ngày tải lên :
22/01/2014, 22:20
... Implementing a Data Mining Process Using Office 2007 187
Introducing the Data Mining Client 188
Importing Data Using the Data Mining Client 189
Data Exploration and Preparation 190
Discretizing Data with ... 135
Creating Data Mining Objects 135
Setting Up Your Data Sources 135
Understanding Data Sources 136
Creating the MovieClick Data Source 137
Using the Data Source View 137
Creating the MovieClick Data ... a Control Flow Example 444
Data Flow 444
Transformations 445
Viewers 446
Exploring a Data Flow Example 447
Working with SSIS in Data Mining 447
Data Mining Tasks 448
Data Mining Query Task 449
Maclennan...
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Tài liệu Wiley - Data Mining with Microsoft SQL Server 2008 (2009)02 pptx
Ngày tải lên :
27/01/2014, 09:20
... online transaction processing (OLTP)
databases and more than 70 data warehouses. The first step is to pull the
relevant data into a database or a data mart where the data analysis is applied.
For example, ... enough and must be supplemented with
additional data. For example, the log data from the web servers contains only
data about web behavior and little (if any) data about the customers. You may
need ... 5
Business Problems for Data Mining 5
Anomaly detection — How do you know whether your data is ‘‘good’’
or not? Data mining can analyze your data and pick out those items that
don’t fit with the rest....
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Tài liệu Professional SQL Server 2000 Data Warehousing with Analysis Services docx
Ngày tải lên :
13/02/2014, 08:20
... having a data warehouse with that of having
smaller data marts that can be fed with the data they need from the operational systems.
❑ Other companies use data marts to complement their data warehouses ... in Data Warehousing 43
The Data Source 43
Operational Data Sources 43
Data Transformation Services 46
DTS Package Tasks 46
Defining DTS Package Components 47
The Data Warehouse and OLAP Database ... Availability 459
Off-the-Shelf Data Mining Tools 459
Definition 459
Operational Data Store vs. Data Warehousing 460
OLAP vs. Data Mining 460
Data Mining Models 460
Data Mining Algorithms 461...
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.Exam 70-463: Implementing a Data Warehouse with Microsoft SQL Server 2012 pot
Ngày tải lên :
06/03/2014, 23:20
... appropriate data model for a data warehouse
Optimize the physical design of a data warehouse
Extract data from different data sources, transform and cleanse the data, and load
it in your data ... Right-click the Database Diagrams folder and select the New Database Diagram op-
tion. If no diagrams were ever created in this database, you will see a message box
informing you that the database ... merge the data from multiple databases. Data quality is
a common problem as well. In addition, many LOB applications
do not track data over time, though many analyses depend on historical data.
A...
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