By Thearon Willis

As essentially the most well known programming languages on the earth, visible easy keeps to extend at the performance and adaptability of its framework. This booklet explains tips on how to use visible simple 2005 to put in writing effective database functions that may be used all through an company.

With this instructing device, you will use queries, perspectives, and saved methods to successfully entry and manage information out of your functions. you will get a company grab on utilizing ADO.NET in addition to OleDb, SQL, and Oracle to entry particular databases. Plus, hands-on examples and try-it-out workouts assist you placed your analyzing into perform in order that with every one bankruptcy, you are going to steadily construct the items of a unmarried application.

What you'll research from this book

  • How ADO.NET maintains to conform as a development block for getting access to and manipulating facts in relational databases
  • Ways to encrypt and decrypt facts, hash passwords, and additional safe entry on your data
  • Techniques for getting access to your internet provider from either Windows(r) and net applications
  • Best practices for utilizing company good judgment and knowledge entry parts to provide record facts 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, reminiscent of 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 courses are crafted to make studying programming languages and applied sciences more uncomplicated than you're thinking that, delivering a dependent, instructional structure that would advisor you thru the entire concepts involved.

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Extra resources for Beginning Visual Basic 2005 Databases (Programmer to Programmer)

Sample text

Table 1-1: SQL Server Data File Objects 4 Object Description Tables Contains the data in a database, organized in a row-column format. Keys Primary keys provide a unique value for each row of data in a table. Foreign keys provide a relationship between two tables using a column in one table and the primary key in another table. Indexes Provides pointers to rows in a table in a similar fashion that the index in this book provides pointers to specific topics. Constraints Provides a means by which you can enforce the integrity of a database, such as not allowing a column to contain a NULL value.

However, because a clustered index sorts the data in the table, a table can contain only one clustered index. You can think of a clustered index like a phone book. The columns that define the index (for example, the last name followed by an initial) are used to sort the table rows. A clustered index stores the data rows of the table in the bottom leaf of the index. This means that the index consists of the index entries pointing to each row of data, and the data rows are stored at the end of the index.

The Primary Key icon will be displayed in the row selector for the ProjectID column. 12. Save the table by clicking the File menu and selecting the Save Table1 menu item or by clicking the Save Table1 icon on the toolbar. In the Choose Name dialog box, enter a table name of Projects and then click OK. Finally, close the designer for the Projects table. 13. Repeat Steps 10 through 12 for the rest of the tables shown in the schema in Figure 1-8. The primary key for each table is the first column listed in each table.

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