Download E-books Pro ODP.NET for Oracle Database 11g (Expert's Voice in Oracle) PDF

By Edmund Zehoo

This booklet is a complete and easy-to-understand advisor for utilizing the Oracle facts supplier (ODP) model 11g at the .NET Framework. It additionally outlines the middle GoF (Gang of 4) layout styles and coding recommendations hired to construct and install high-impact mission-critical purposes utilizing complex Oracle database beneficial properties during the ODP.NET provider.

The publication information the good points of the ODP.NET supplier in major sections: “Basic,” masking the fundamentals and mechanisms for information entry through ODP.NET; and “Advanced,’ protecting complex Oracle gains akin to globalization, savepoints, dispensed transactions and the way to name them through ODP.NET, complicated queueing (AQ), and promotable transactions. It takes you from the floor up via assorted implementation eventualities through a wealthy selection of C# code samples.

It outlines database protection and function optimization methods and strategies on ODP.NET that comply with most sensible practices and adaptable layout. assorted GoF layout styles are highlighted for various kinds of ODP.NET utilization situations with attention of functionality and security.

It presents a complete advisor to the synergistic integration of Oracle and Microsoft applied sciences comparable to the Oracle Developer instruments for visible Studio (11.1.0.7.10). It additionally information how programmers could make use of ODT to streamline the production of strong ODP.NET purposes from in the visible Studio environment.

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Determine 4-9. working the Bind Variables instance „ Tip essentially the most universal the reason why builders use bind variables is functionality. Bind variables support enhance functionality by way of permitting SQL statements with an analogous constitution to be cached in a shared pool. we'll disguise extra on bind variable functionality in bankruptcy 12 of this booklet. Updating info you've gotten written ODP. internet code to retrieve info up to now; now, let’s have a look within the different path. you could replace information within the Oracle database utilizing universal tools: eighty three CHAPTER four „ RETRIEVING AND MANIPULATING facts WITH ODP. internet x Executing a unmarried SQL replace, INSERT, or DELETE assertion x Committing dataset alterations to the database during the OracleDataAdapter category Let’s seriously look into either techniques within the sections to keep on with. Executing a unmarried INSERT, replace, or DELETE assertion while you are making plans to layout your individual SQL statements and simply want ODP. internet to execute them as they're, you should use the ExecuteNonQuery() approach to the OracleCommand item. The ExecuteNonQuery() strategy enables you to run any assertion that doesn't go back a outcome. those statements comprise SQL INSERT, replace, DELETE, adjust desk, or even CREATE desk statements. Let’s construct a pattern program to check this out. you'll write a few code so as to add a brand new list, replace the list, after which ultimately delete the checklist. Create a brand new shape, and position a button at the shape. within the click on occasion of this button, write the code in directory 4-9. directory 4-9. Executing SQL INSERT, replace, and DELETE Statements deepest void btnRunStatements_Click(object sender, EventArgs e) { string _connstring; _connstring = "Data Source=localhost/NEWDB;User Id=EDZEHOO;Password=PASS123;"; int _recordsAffected; try out { OracleConnection _connObj = new OracleConnection(_connstring); _connObj. Open(); //Insert a brand new checklist OracleCommand _cmdObj = _connObj. CreateCommand(); _cmdObj. CommandText = "INSERT INTO Products(ID, identify, expense) VALUES(:ID,:Name,:Price)"; _cmdObj. Parameters. upload (new OracleParameter ("ID","M1")); _cmdObj. Parameters. upload (new OracleParameter ("Name","Mudguards")); _cmdObj. Parameters. upload (new OracleParameter ("Price","250. 50")); _recordsAffected=_cmdObj. ExecuteNonQuery(); MessageBox. Show("Total files affected after insert:" + _recordsAffected); //Update an current list _cmdObj. CommandText = "UPDATE items SET Remarks=:Remarks the place ID=:ID"; _cmdObj. Parameters. Clear(); _cmdObj. Parameters. upload (new OracleParameter ("Remarks","Quality dust guards")); _cmdObj. Parameters. Add(new OracleParameter("ID", "M1")); _recordsAffected=_cmdObj. ExecuteNonQuery(); MessageBox. Show("Total files affected after update:" + _recordsAffected); //Delete an present checklist _cmdObj. CommandText = "DELETE FROM items the place ID=:ID"; _cmdObj. Parameters. Clear(); eighty four CHAPTER four „ RETRIEVING AND MANIPULATING information WITH ODP. web _cmdObj. Parameters. Add(new OracleParameter("ID", "M1")); _recordsAffected = _cmdObj. ExecuteNonQuery(); MessageBox. Show("Total files affected after delete:" + _recordsAffected); _connObj.

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