configuring connections and connecting to data
Chapter 5 Configuring Connections and Connecting to Data
... InsertCommand UpdateCommand DeleteCommand DataReader Generic classes Connection Command DataReader DataAdapter DataSet Core ADO.NET Namespaces System .Data System .Data. OleDb System .Data. SqlClient ... Connection methods And … Questions? 10 Lesson 2: Connecting to Data Using Connection Objects Opening and Closing Data Connections Connection Events Opening and Closing Data Connections Open and Close ... to ADO.NET Introdution to ADO.NET XML is an industry standard XML is an industry standard format for storing and format for storing and transferring data over transferring data over multiple platforms...
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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 ... 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 create a database connection, ... Execute an SQL command in the SQL Editor by right-clicking the node and choosing Execute Command The SQL Editor enables you to write and execute SQL commands on any connected database Note: When...
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Tài liệu Module 2: Connecting to Data Sources pptx
... communication between a data source and a component, an XML Web service, or an application A data provider allows you to connect to a data source, retrieve and manipulate data, and update the data source ... When connecting to a data source, you must first choose a NET data provider The data provider includes classes that enable you to connect to the data source, read data efficiently, modify and ... classes that you use to connect to a data source, and retrieve and update data Types of NET data providers " SQL Server NET Data Provider " OLE DB NET Data Provider " ODBC NET Data Provider " Others...
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Tài liệu Connecting to Access and Oracle Databases docx
... how to connect to the Northwind Access database using an OleDbConnection object and retrieve a row from the Customers table Notice that you use an OleDbCommand and OleDbDataReader object to run ... myOleDbCommand = myOleDbConnection.CreateCommand(); // set the CommandText property of the OleDbCommand object to // a SQL SELECT statement that retrieves a row from the Customers table myOleDbCommand.CommandText ... // create an OleDbDataReader object and call the ExecuteReader() // method of the OleDbCommand object to run the SELECT statement OleDbDataReader myOleDbDataReader = myOleDbCommand.ExecuteReader();...
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Connecting to an Access Databasefrom ASP.NET
... 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, Delete, and Change permissions ... 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 recognized ... user account, add it to the permissions list on both computers For a user account local to the IIS computer, create a duplicate account on the Access computer with the same name and password Grant...
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Tài liệu Connecting to a Named Instance of SQL Server or Microsoft Data Engine (MSDE) docx
... Transaction Coordinator (DTC) and the Microsoft Search services are installed and used simultaneously by every installed instance of SQL Server Client tools such as Enterprise Manager and Query Analyzer ... 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...
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Tài liệu Module 1: Introduction to Data Warehousing and OLAP pptx
... relational data marts and OLAP cubes differ greatly in data storage, data content, data sources, data retrieval, and business analysis capabilities Data Storage Relational data marts and OLAP cubes ... Storage Data Storage Relational Relational Data Structure Data Structure N-dimensional N-dimensional Data structure Data structure Data Content Data Content Detailed and Detailed and Summarized Data ... as their data sources Customer_Dim Customer_Dim ShipperKey ShipperKey ShipperID ShipperID CustomerKey CustomerKey CustomerID CustomerID To facilitate data retrieval and analysis, a data warehouse...
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Tài liệu Adding Restrictions to DataTable and DataColumn Objects phần 1 ppt
... Details];"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet); ... bad data from being added to your DataSet to begin with This helps reduce the errors when attempting to push changes in your DataSet to the database If a user of your program attempts to add data ... restrictions to your DataTable and DataColumn objects yourself using the properties of the DataTable and DataColumn objects For example, assume you have a DataSet object named myDataSet that...
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Tài liệu Adding restrictions to datatable and datacolumn objects phần 2 pptx
... Details];"; SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.Fill(myDataSet); ... constraints to the DataTable objects Next, you'll see how to add restrictions to DataColumn objects Adding Restrictions to DataColumn Objects In this section, you'll see how to add restrictions to the DataColumn ... myDataColumn.DataType = System.String myDataColumn.AllowDBNull = True myDataColumn.AutoIncrement = False myDataColumn.AutoIncrementSeed = myDataColumn.AutoIncrementStep = myDataColumn.MaxLength = 40 myDataColumn.ReadOnly...
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Tài liệu Adding Restrictions to DataTable and DataColumn Objects phần 3 ppt
... SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; DataSet myDataSet = new DataSet(); mySqlConnection.Open(); mySqlDataAdapter.FillSchema(myDataSet, ... False myDataColumn.AutoIncrement = True myDataColumn.AutoIncrementSeed = myDataColumn.AutoIncrementStep = myDataColumn.MaxLength = -1 myDataColumn.ReadOnly = True myDataColumn.Unique = True myDataColumn.ColumnName ... ProductName myDataColumn.DataType = System.String myDataColumn.AllowDBNull = False myDataColumn.AutoIncrement = False myDataColumn.AutoIncrementSeed = myDataColumn.AutoIncrementStep = myDataColumn.MaxLength...
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Tài liệu Connecting to a Password-Protected Access Database ppt
... Anyone with the password has unrestricted access to the database The Set Database command from the Tools database password Security menu is used to set up a The OLE DB provider for Microsoft Jet ... that users enter a password to obtain access to the database and database objects This is also known as share-level security A password does not allow groups or users to have distinct levels of ... in addition to those defined by ADO.NET To open a database secured by a Microsoft Access database password, use the Jet OLEDB:Database Password attribute in the connection string to specify the...
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Tài liệu Connecting to a Secured Access Database pptx
... addition to the database or MDB file This file contains the user and group information for the secured database while the actual permissions are stored in the database file When you connect to a ... OLEDB:System Database attribute in the connection string to specify the path and filename of the workgroup information file or system database This corresponds to the OLE DB property DBPROP_JETOLEDB_SYSDBPATH ... file and the workgroup file must be supplied The OLE DB provider for Microsoft Jet has several provider-specific connection string attributes in addition to those defined by ADO.NET To open a database...
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Tài liệu Connecting to an ODBC Data Source ppt
... Library Visual Studio 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 ... from the Data tab of the Toolbox onto a form or design surface Configure the ConnectionString property in the Properties window of the OdbcConnection object that appears The NET ODBC data provider ... requires a reference to the System .Data. Odbc namespace in NET Framework Version 1.1 In Version 1.0, the namespace is Microsoft .Data. Odbc Add a NET Reference to Microsoft .Data. Odbc.dll for a NET...
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Tài liệu Connecting to an Oracle Database docx
... Oracle uses a configuration file named TNSNAMES.ORA to locate the Oracle database and determine how to connect to it based on the Data Source or Database attribute in the connection string An example ... the database and because they remove a layer of indirection from the application to the database OLE DB You can use the OLE DB NET data provider with the Oracle OLE DB provider (MSDAORA) to access ... that already use OLE DB Use a native Oracle NET data provider where practical ODBC Finally, the ODBC NET data provider can connect to an Oracle database An example of the connection string is...
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Tài liệu Using XSD Schema Files to Load and Save a DataSet Structure pptx
... void writeSchemaButton_Click(object sender, System.EventArgs e) { DataSet ds = new DataSet( ); SqlDataAdapter da; // Fill the Order table and add it to the DataSet da = new SqlDataAdapter("SELECT ... try { // Read the schema into the DataSet DataSet ds = new DataSet( ); ds.ReadXmlSchema(xtr); // Bind the default view of the Orders table to the grid resultDataGrid.DataSource = ds.Tables[ORDERS_TABLE].DefaultView; ... of the Orders table to the grid resultDataGrid.DataSource = ds.Tables[ORDERS_TABLE].DefaultView; // Write the XSD schema to a file // Display file dialog to select XSD file to write SaveFileDialog...
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Data Mining Classification: Basic Concepts, Decision Trees, and Model Evaluation Lecture Notes for Chapter 4 Introduction to Data Mining pptx
... same data! 10 © Tan,Steinbach, Kumar Introduction to Data Mining Decision Tree Classification Task Decision Tree © Tan,Steinbach, Kumar Introduction to Data Mining Apply Model to Test Data Test Data ... condition? • How to determine the best split? – Determine when to stop splitting © Tan,Steinbach, Kumar Introduction to Data Mining 46 Stopping Criteria for Tree Induction Stop expanding a node ... that belong to more than one class, use an attribute test to split the data into smaller subsets Recursively apply the procedure to each subset © Tan,Steinbach, Kumar Introduction to Data Mining...
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Data Mining Association Analysis: Basic Concepts and Algorithms Lecture Notes for Chapter 6 Introduction to Data Mining pdf
... Used by DHP and vertical-based mining algorithms Reduce the number of comparisons (NM) – Use efficient data structures to store the candidates or transactions – No need to match every candidate ... Pointer to projected database of its ancestor node – Bitvector containing information about which transactions in the projected database contain the itemset © Tan,Steinbach, Kumar Introduction to Data ... transactions to determine the support of each candidate itemset – To reduce the number of comparisons, store the candidates in a hash structure • Instead of matching each transaction against every candidate,...
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Data Mining Association Rules: Advanced Concepts and Algorithms Lecture Notes for Chapter 7 Introduction to Data Mining docx
... Introduction to Data Mining 26 Examples of Sequence Data Sequence Database Sequence Element (Transaction) Event (Item) Customer Purchase history of a given customer A set of items bought by a customer ... Introduction to Data Mining 20 Multi-level Association Rules Food Electronics Bread Computers Milk Wheat Skim White Foremost © Tan,Steinbach, Kumar 2% Desktop Kemps Introduction to Data Mining Home Laptop ... Kumar Introduction to Data Mining 35 Candidate Generation Base case (k=2): – Merging two frequent 1-sequences and will produce two candidate 2-sequences: and General...
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Data Mining Cluster Analysis: Basic Concepts and Algorithms Lecture Notes for Chapter 8 Introduction to Data Mining pot
... Introduction to Data Mining Applications of Cluster Analysis Understanding – Group related documents for browsing, group genes and proteins that have similar functionality, or group stocks with ... objective function approach is to fit the data to a parameterized model • Parameters for the model are determined from the data • Mixture models assume that the data is a ‘mixture' of a number ... characteristics, e.g., autocorrelation Dimensionality Noise and Outliers Type of Distribution © Tan,Steinbach, Kumar Introduction to Data Mining 18 Clustering Algorithms K-means and its variants Hierarchical...
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Data Mining Cluster Analysis: Advanced Concepts and Algorithms Lecture Notes for Chapter 9 Introduction to Data Mining pot
... representative points toward the center helps avoid problems with noise and outliers CURE is better able to handle clusters of arbitrary shapes and sizes © Tan,Steinbach, Kumar Introduction to Data Mining ... (d) Introduction to Data Mining 13 Chameleon: Clustering Using Dynamic Modeling Adapt to the characteristics of the data set to find the natural clusters Use a dynamic model to measure the similarity ... Introduction to Data Mining 17 Experimental Results: CHAMELEON © Tan,Steinbach, Kumar Introduction to Data Mining 18 Experimental Results: CHAMELEON © Tan,Steinbach, Kumar Introduction to Data Mining...
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