Visual Class

Visual inspection of the product Dataflex

Visual Dataflex is a database (Rapid Application Development) of Visual Studio where windows and applications Web database can be designed FDR.

~ The Best Kept Secret ~ in the development of databases

This article is intended for display in mid-size and small companies seeking a cheaper or faster to other platforms such as Microsoft. NET and VB.

================= This is the index for this article: ===============

* Where did DataFlex Visual origin?

* What advantages does it more. NET and VB?

* Why should I try Visual DataFlex (eval download)?

* Who Visual DataFlex?

* What support would I receive newsgroups or support groups?

* What is the future of Visual DataFlex?

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* Where did Visual DataFlex origin?

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In 1981, with DBASE2, FoxPro, etc. DATAFLEX (DOS version) has launched its version 2.3 for DOS, CPM, and UNIX.

Because it was the database engine the highest price and the platform development and it outweighed the characteristics of competition many people who have not been

programmers bought DATAFLEX and it is English like syntax has become faithful and many successes have been launched. If you were a

accounting, sales manager, or analyst inventory DATAFLEX was perfect because it is a product 4GL and manipulating the interface with the database included in the

package automatically for you, and a winning combination of professional skills and development database easily combined to make a very successful effort v2.3.

Packages written in this period were experts in the field and that many unorthodox methods were used, it worked! Unfortunately as many

other (now) legacy systems written for DOS became more and more difficult to deploy and maintain since Windows was introduced. There are many DOS DATAFLEX

applications still fueling enterprises worldwide today and most plan: Visual DataFlex port or a port on the Web? The main concern of many

companies is that the unique code and proven that works as Lightning would be compromised by eith of these solutions, and is generally a real concern, but

significantly less importance that users perceive.

* What are the advantages it has more. NET and VB?

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Imagine you are a software designer, and a solution. NET is available. First, you start with the user interface, and tools to produce

an interface to Windows / Web are very attractive. Then you have the task of writing an interface for data that is a huge undertaking and requires

thousands of lines of code to produce a stable demand following the specifications of the rules of database work table, the connections between tables database

(Dependencies, etc.).

Now, imagine you're a visual designer DataFlex. First, you start by subclassing the controls provided by access to data in the world (true Windows controls) and

leave these subclasses (depending your company name, for example) completely alone and without any change …. but for future use. Then you open the manufacturer database

datadictionaries creates for each table in your database project, the basic rules of data to each other (self-generated) and how

each column of each table appears, which will apply to validate and define your business rules directly in the class for the table.

See how the two approaches are quite the opposite?

Visual DataFlex centralize the validation data, research, compensation, removal, and savings, and then you use the Visual Studio to create the visual part of

program is built on a shaft connected data dictionary objects (business rule layers instantiated based on classes) that can introduce

exceptions to rules business and higher.

The benefits are immediately apparent:

1 The integrity of data and business rules layers intertwine and you must validate the data (generated automatically based on your validation rules) and synchronize

together in order to save a record or records.

2. The visual designer has the same classes for the most part. NET and VB, but they are linked in definitions database and take immediate

Save / Erase / delete / validate / find operation that does not require programming.

The combination of these advantages mean that your data integrity is higher, your data operations are more eloquent, and also the interface (although not

quite as beautiful as. NET) is visually appealing.

The design and deployment time from beginning to end is lower. NET on an estimated 40% to reduce the cost of your customers and more winning bids for you.

* Why should I try Visual DataFlex (download eval to www.DataAccess.Com)?

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Firstly, the above, you can see how an approach based on the database is much easier than other options. Do not download VDF not schedule a game! There is

Designed for business applications as a specialty, so if that's what I suggest you schedule give it a try.

Second, the VDF community is united and we publish the code and free add-ons, answer questions immediately and with great skill on the newsgroups, and you

belong to an elite membership that the close relations with other developers is quite attractive.

Visual DataFlex is a seamless interface to virtually any database back end you care to use such MS-SQL, IBM DB2, etc.

If you are afraid of being fired for using a non-Microsoft product, please ignore this article completely!

* Who Visual DataFlex?

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The answer is surprising. Course Data Access Worldwide of Miami FL United States makes the product, but it is designed in large part thanks to input from the person

the Developers who receive personal information from representatives of the company on our forum group discussion and feedback at conventions personally. Imagine that you also

may influence the direction that the flow of products and your genuine bug reports are included with the fixes in the next version! Credit where credit due.

Data Access also has distributors worldwide and a global product is used in many countries.

* What support would I get from focus groups or support groups?

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Example: If you are from New England, USA, you can join the NEDC www.NeDataFlex.Com User Group in hosting the developers and meets regular

person to promote camaraderie and show tech presentations on current projects by members.

In addition, there is a Visual DataFlex newsgroup which is controlled by Tech Data Access Support to some extent, but the information comes mainly from the world

basis Visual DataFlex developers and I personally recommend this newsgroup with the support of high quality has received (and given) over the years.

* What is the future of Visual DataFlex?

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Access Data Corp network partners in many places that have the latest features available, such as SOAP, AJAX, ActiveX, Web Services, etc., and is

preparing to launch version 12 which will be very familiar. NET. In addition, the Free Personal Edition ~ ~ which includes all the studio and

All kits connectivity a limit of 5 users will be unveiled at the next global meeting entitled "Synergy" in Miami Beach FL in 2007. The promotion of this

product will be largely by word of mouth, which continues the tradition and the name of the product ~ best kept secret in database programming alive ~!

I invite you to pop open a search engine and search for Visual DataFlex to see what all (not (noise)) is about!

About the Author

The author’s business is availabe at Applause Software