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By Thearon Willis
As probably the most well known programming languages on the planet, visible uncomplicated maintains to extend at the performance and adaptability of its framework. This booklet explains tips on how to use visible simple 2005 to jot down effective database purposes that may be used all through an firm.
With this instructing software, you will how to use queries, perspectives, and saved systems to successfully entry and manage info out of your functions. you will get an organization seize on utilizing ADO.NET in addition to OleDb, SQL, and Oracle to entry particular databases. Plus, hands-on examples and try-it-out routines assist you positioned your studying into perform in order that with every one bankruptcy, you will progressively construct the items of a unmarried application.
What you'll study from this book
- How ADO.NET keeps to conform as a construction block for getting access to and manipulating info in relational databases
- Ways to encrypt and decrypt info, hash passwords, and additional safe entry on your data
- Techniques for gaining access to your net carrier from either Windows(r) and internet applications
- Best practices for utilizing enterprise good judgment and knowledge entry parts to provide document info or replace facts on your back-end databases
Who this e-book is for
This e-book is for builders who are looking to learn how to write database functions and back-end databases, corresponding to Microsoft(r) entry, Microsoft(r) SQL Server, and Oracle(r). a few event with visible uncomplicated 2005 is useful yet now not required.
Wrox starting publications are crafted to make studying programming languages and applied sciences more uncomplicated than you're thinking that, supplying a established, instructional structure that would consultant you thru all of the recommendations involved.
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Extra info for Beginning Visual Basic 2005 databases
Sample text
Enter the field names, data type, and data type attributes as shown in Table 1-6. 17 Chapter 1 Table 1-6: Projects Table Fields Field Name Data Type Data Type Attributes ProjectID Number Field Size = Replication ID, Required = Yes, Indexed = Yes (No Duplicates) ProjectName Text Field Length = 50, Required = Yes, Allow Zero Length = No ProjectDescription Memo Required = No, Allow Zero Length = No SequenceNumber Number Field Size = Byte, Required = Yes LastUpdateDate Date/Time Required = Yes 11. Click ProjectID in the Field Name column and then click the Edit menu and choose the Primary Key menu item or click the Primary Key icon on the toolbar to set this field as the primary key for the table.
First, they enable fewer SQL statements to be transmitted across the network, as you send only the name of the stored procedure and any parameters it may require. 6 Databases Second, stored procedures are similar to procedures and functions in other programming languages, as they can contain input and output parameters and can return values. They use logic to control the flow of processing, and numerous functions and SQL statements can be used in stored procedures. You can use stored procedures to execute routine functions, such as selecting, inserting, updating, and deleting data.
A transaction is the execution of a group of SQL statements as one logical unit of work. SQL Server automatically manages transactions in the transaction log, generating a before-and-after picture of the data in a table that is changed. This means that you can execute an update query to update a row of data and SQL Server logs a record of the data before it was changed and after it was changed. This allows for backward and forward recovery of the data in your database. SQL Server manages transaction logging automatically.