connecting to data using connection objects
Tài liệu Module 2: Connecting to Data Sources pptx
... authentication) Module 2: Connecting to Data Sources 11 What Is a Connection String? ! A connection string defines the parameters required to make a connection to a data source ! Connection string parameters ... Introduction To move data between a data store and your application, you must first have a connection to the data store Definition The ConnectionString property provides the information that defines a connection ... to use the local SQL Server, the Northwind database, and integrated security Add code to the Open button to open the connection cnNorthwind.Open(); Add code to the Close button to close the connection...
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Chapter 5 Configuring Connections and Connecting to Data
... How to create connection? Creating Connection Objects Programmatically (page 204-205) Connection properties Connection methods And … Questions? 10 Lesson 2: Connecting to Data Using Connection Objects ... to ADO.NET .NET Data Provider Objects NET Data Provider Connection Command Data Adapter SelectCommand InsertCommand UpdateCommand DeleteCommand DataReader Generic classes Connection Command DataReader ... Connection Object? Connection classes How to create connection? Creating Connections in Server Explorer Lab: P206 Creating Connections Using Data Wizards Lab: P207 Creating Connection Objects Programmatically...
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Tài liệu Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) docx
... information about the server result.Append( "ConnectionState = " + conn.State + Environment.NewLine + "DataSource = " + conn.DataSource + Environment.NewLine + "ConnectionState = " + conn.State + Environment.NewLine ... shared The System .Data. SqlClient class cannot automatically discover the port number of a named instance of SQL Server listening on a port other than the default 1433 To connect to a named instance ... instance name The format is \ This format is used in the connection string to specify the Data Source attribute for a named instance Each instance operates independently...
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Tài liệu Connecting to an ODBC Data Source ppt
... connects to ODBC data sources through the OdbcConnection object The ODBC driver connection string is specified using the ConnectionString property It includes settings needed to establish the connection ... connection to the data source The connection string format closely matches the ODBC connection string format Additionally, you can specify an ODBC data source name (DSN) or file DSN by setting the ConnectionString ... also supports creating ODBC data source connections visually: • • Create a data connection in Server Explorer and drag it onto a form or design surface Configure the OdbcConnection object that appears...
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Tài liệu Connecting to SQL Server Using Integrated Security from ASP.NET ppt
... mapped domain user has required privileges to run the web application Configure the web application to impersonate the domain user Add the following elements to the web.config file for the web application: ... on IIS The account has limited permissions and is local to the IIS computer and therefore not recognized as a user on remote computers To overcome this limitation when SQL Server is not on the ... application in the context of a domain user recognized on both IIS and SQL Server computers In addition to the areas identified where IIS and SQL Server are on the same computer, the following additional...
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hash-based approach to data mining
... rules”, it is said to be a good method to implement over different types of data in variant size 10 Hash-Based Approach to Data Mining CHAPTER 2: Algorithms using hashbased approach to find association ... going into the detail of algorithms, I’d like to give you a brief view of hashing In term of data structure and algorithm, hash-method often used an array structure to store database If the database ... association rules in the transaction databases and use the PHS (perfect hashing and data shrinking) algorithm to build a system, which helps directors of shops/stores to have a detailed view about his...
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Connecting to Databases
... calls into the network protocols that are used by SQL databases To work with other databases, you need to install the database server and the JDBC driver Connecting to Databases You use the Databases ... initial connection you can easily use the database connection node in the Runtime window to connect to and disconnect from a database 66 Chapter Connecting to Databases Using NetBeansTM 5.0 IDE To ... Each database connection node in the Runtime window represents a connection to a database You need to set up a separate connection to each database on your database server that you want to use...
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Introduction to Data Access
... close two Connection objects If the DataSource object we’re using is a connection pool, we’ll potentially avoid the creation of an actual database connection Yet it makes sense to reuse a Connection ... indefinitely or until database administrators clean up connections This typically leads to situations where the database server needs to be restarted every few days to clean up unclosed connections Listing ... important to fix These categories apply whenever you write data- access code To our knowledge, all data- access tools available today can be affected by any of these categories Database Resources Data- access...
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MCMS Development Using Page Objects
... Switch to Live Site, and then navigate to the new page to verify it is on the live site Task 9-29 Using the Revision History to Compare Versions In the Authoring Console, select Revision History ... custom authentication, 66–70 creating custom logon pages, 69 forms-based authentication, 69 mapping user to Active Directory user, 66 user access, 67 ■D databases see also MCMS database adding database ... revision histories, 126 comparing versions using, 190 tracking revisions, 126–127 204 ■INDEX rights directory rights, 143 granting rights to MCMS database, 28 granting system account rights to database,...
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Updating Server Data Using .NET Remoting
... "OrderID"; public DataSet LoadOrders( ) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet da = new SqlDataAdapter("SELECT * FROM Orders", SQL_CONNECTIONSTRING); ... constants using System; using System.Windows.Forms; using System.Runtime.Remoting; using System.Runtime.Remoting.Channels; using System.Runtime.Remoting.Channels.Tcp; using System .Data; using ADOCookbookCS.NorthwindRemoteCS; ... client-side DataSet to create a copy of the DataSet containing only the changes This DataSet is passed to the UpdateOrders( ) method of the remote object instead of to the entire DataSet to minimize...
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Connecting to the FreeNAS
... permissions We now want to change directory to store, to this we use the cd command: ftp> cd store 250 OK Current directory is /store ftp> Doing a directory listing of the store folder reveals: ... need to change directory to the /mnt directory: # cd /mnt Now create a directory to peg the FreeNAS server to: # mkdir freenas And now mount the FreeNAS server: # mount 192.168.1.250:/mnt/store ... minimum port to allocate for PASV pasv_min_port data connections (0 = use any style port) The maximum port to allocate for PASV pasv_max_port data connections (0 = use any style port) Using the...
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Connecting to an Access Databasefrom ASP.NET
... On the Access computer, the user account that is used to access the database requires Read, Write, Execute, and Change permissions on the database file The user identity needs Read, Write, Execute, ... and Change permissions on the folder containing the database files The user account requires permissions to access the share that contains the database file and folders The user account must be ... is configured to prevent users of the web site from viewing the contents of the web.config file—this is the default configuration Other ways to impersonate a user from an ASP...
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Tài liệu Module 8: Validating XML Data Using Schemas doc
... makes it easier to write code that accesses and modifies XML data programmatically 22 Module 8: Validating XML Data Using Schemas Using Element Types Slide Objective To describe how to define child ... how to write an XML schema and apply it to an XML document The XML document will then be validated by using the Microsoft XML Validator tool Note You can download the Microsoft XML Validator tool ... section, you will learn how to use DOM to apply an XML schema to an XML data packet submitted to the Web server You will also learn how to diagnose validation errors, and how to handle invalid documents...
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Tài liệu Chapter-18-Connecting to the Internet pptx
... about it? One way would be to pay your ISP to it for you You don’t need to that: it’s easy enough to yourself on the World-Wide Web You must be connected to the Internet to perform these steps This ... yourself to that country If you move to, say, Holland, you would have to change to dunham.nl—a situation only fractionally better than being bound to an ISP The same considerations apply to dunham.tx.us, ... and Flybynight goes broke, or you decide to change to a different ISP, your mail address is gone, and you have to explain that to everybody who might want to contact you If, on the other hand, your...
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Tài liệu A Concise Introduction to Data Compression- P1 pdf
... The third factor that affects the storage and transmission of data is security Generally, we not want our data transmissions to be intercepted, copied, and read on their way Even data saved on ... specific type of data The goal of the book is to introduce the reader to the chief approaches, methods, and techniques that are currently employed to compress data The main aim is to start with ... www.verypdf.com to remove this watermark 1 Approaches to Compression How can a given a data file be compressed? Compression amounts to eliminating the redundancy in the data, so the first step is to find...
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Tài liệu A Concise Introduction to Data Compression- P2 ppt
... determines whether it is a token or raw data A token is used to obtain data from the dictionary and write it on the output Raw data is output as is The decoder does not have to parse the input in ... Compare X to its successors in the tree (from left to right and bottom to top) If the immediate successor has frequency F + or greater, the nodes are still in sorted order and there is no need to change ... encoder has to use a buffer Bits of the compressed data are entered into the buffer as they are being generated and are moved out of it at a constant rate, to be transmitted It is easy to see intuitively...
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Tài liệu A Concise Introduction to Data Compression- P3 pptx
... order to remove ambiguity, the term “edoc” is used here to refer to them Each edoc is converted to a prefix code that’s output The first table allocates edocs through 255 to the literals, edoc 256 to ... continuous-tone or discrete-tone Approach 6: The principle of this approach is to separate a continuous-tone color image into three grayscale images and compress each of the three separately, using ... frequency It is also possible to modify this transform to conserve the energy of the data vector All that’s needed is to multiply the transformation matrix W by the scale factor 1/2 Thus, the product...
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Tài liệu A Concise Introduction to Data Compression- P4 pptx
... wavelet transform is the tool used in practice to analyze digital data and compress it The wavelet transform is a tool that cuts up data or functions or operators into different frequency components, ... compressed in a single left -to- right, top -to- bottom scan; (b) progressive mode where the image is compressed in multiple blocks (known as “scans”) to be viewed from coarse to fine detail; (c) lossless ... DCT when applied to a continuous-tone image and to a discrete-tone image We start with the highly correlated pattern of Table 5.10 This is an idealized example of a continuous-tone image, since...
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Tài liệu A Concise Introduction to Data Compression- P5 docx
... computer users long to realize that a computer can also store and process nonnumeric data The term “multimedia,” which became popular in the 1990s, refers to the ability to digitize, store, and manipulate ... is then applied in the same manner to three of the 16 subbands, decomposing each into 16 smaller subbands The last step is to decompose the top-left subband into four smaller ones 11 12 13 14 15 ... audio file, we often want to listen to it while it is decompressed (in fact, we decompress it only in order to listen to it) This is why audio compression methods tend to be asymmetric The encoder...
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