... command that doesn't return a result set from the database. In this section, you'll learn how to use the ExecuteNonQuery() method to execute commandsthatmodify information inthe database. ... mySqlDataReader.Close(); } public static void Main() { SqlConnection mySqlConnection = Executing CommandsthatModifyInformationintheDatabase You can use the ExecuteNonQuery() method of a Command ... Finally, you execute the INSERT statement using the ExecuteNonQuery() method: int numberOfRows = mySqlCommand.ExecuteNonQuery(); The ExecuteNonQuery() method returns an int value that indicates...
... DataTable containing the schema from the Orders table inthe Northwind sample database. The method CreateTableFromSchema( ) inthe sample code is called to create a table inthedatabase from ... a schema inthedatabase for the schema of the DataTable argument. The method builds a DDL statement from the schema information and executes it against the data source specified by the connection ... MessageBoxIcon .Information) ; } private void CreateTableFromSchema(DataTable dt, String connectionString) { // Drop the new table if it is already there. StringBuilder sqlCmd = new StringBuilder(...
... first mapping them into a domain ontol-ogy, then constructing the matches based on the rela-tionships inherent inthat ontology. The iMAP systemreformulates schema matching as a search in an oftenvery ... consider again the databases in Figure 2. Supposewe have created the mappings, and have used themto transfer the house listings from database S and an-other database U (not shown inthe figure) ... Pottinger & Bernstein 2003). Thisproblem has been studied since the early 1980s. It arises in building a database system that comprises severaldistinct databases, and in designing the schema...
... and mine it very deeply, not necessarily discovering every aspect of the domain but requiring thatthe various aspects be integrated with one another to produce a coherent whole. Even inthe ... interfaces (limiting that phrase, for the moment, to mean typed English sentences) to various kinds of information systems. At one end of this spectrum is simple, single database query, in ... THERE STILL IS GOLD INTHEDATABASE MINE Madeleine Bates BBN Laboratories 10 Moulton Street Cambridge, MA 02238 Let me state clearly at the outset that I disagree with the premise that...
... insights regarding productive and unproductive activities in an online world? In the late nineties, online traffic and the total amount of business conducted through the Internet were growing rapidly ... tangible), and the type of electronic 16labor, and where t is the number of years in business. t is included inthe model to control for the maturity of a company. Companies operating inthe Internet ... and 0 for physical dot coms. Further, the α’s and the corresponding levels of inputs inthe last four formulations involving the dummy variable apply only to the physical dot coms. 1.5 DATA...
... for the dynamic nature of the Internet and the information that can be found on it;3. The search for information is often limited to a few Internet services, such as the WWW. Finding information ... which information is, and which is not stored in these databases. Combining the stored data to extract valuable information from it (for instance, by discovering interesting patterns in it) ... picture of the size of the Internet, let alone to make an estimation of the amount of informationthat is available on or through it;• The dynamic nature of the information on Internet: information...
... Search engines are domain-independent in the way they treat gathered information and inthe way they enable users to search in it8. Terms in gathered documents are lifted out of their context, ... search the information on the Internet itself, but the meta- information that has been gathered about it. The result of such a search, is not the meta- information itself, but pointers to the document(s) ... evenhigher inthe future) thatthe questionwho is supplying theinformation hasbecome less important: demand for information is becoming the mostimportant aspect of the information chain.What's...
... stored inthe InfoCubes, the central data containers of BW. For more information, see Business Information Warehouse online documentation. Chapter 7: Overview of Reporting inthe Business Information ... of Reporting inthe Business Information Warehouse Contents What Is the Business Information Warehouse? 7–2 Business Information Warehouse Architecture: An Overview 7–2 Business Information ... systems include extraction programs that export the data from the extract tables and send it to the Business Information Warehouse inthe required format. Business Content inthe Business Information...
... containing an identity column, and then retrieve the new value for that column generated by the database. You can also do additional work in a stored procedure such as inserting a row into ... shown inthe earlier section, "Modifying Rows in a DataTable." Note You'll find a complete program named PushChangesUsingProcedures.cs inthe ch11 directory that illustrates the ... use of the methods shown in this section. The listing for this program is omitted from this book for brevity. Creating the Stored Procedures intheDatabase You'll create the following three...
... generated by thedatabase when the new row is pushed to the database by the Update() method in step 4. When the Update() method is called, the AddProduct4() stored procedure is run to add the new ... row to the Products table. Thedatabase then generates a new ProductID for the row, which is then returned by the AddProduct4() stored procedure. You can then read the new ProductID using myNewDataRow["ProductID"], ... The int returned by the Fill() method is the number of rows retrieved from thedatabase and copied to myDataSet. The myDataSet object now contains a DataTable named Products, which contains...