From various sources I have collected the following regular expression patterns. They helped me a lot in front-end and back-end validation.

Alpha:

Pattern: ^[a-zA-Z_ ]+$
Description: Allows only ‘A-Z’, ‘a-z’, space ( ‘ ‘ ) and underscore ( ‘_’).

Alphanumeric:

Pattern: ^[a-zA-Z0-9_ ]+$
Description: Allows only ‘A-Z’, ‘a-z’, ‘0-9′, space ( ‘ ‘ ) and underscore ( ‘_’).

Email:

Pattern: /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i

Numeric:

Pattern: ^\d+$

Decimal:

Pattern: ^\d+(?:\.\d{0,2})?$

Date - 1:

Pattern: ^(0[1-9]|[1,2][0-9]|3[0-1])-(0[1-9]|1[0,1,2])-\d{4}$
Description: Date format DD-MM-YYYY

Date - 2:

Pattern: ^(0[1-9]|1[0,1,2])-(0[1-9]|[1,2][0-9]|3[0-1])-\d{4}$
Description: Date format MM-DD-YYYY

US Zip Code:

Pattern: ^\d{5}$

US Telephone Number:

Pattern: ^1?[\-]?\(?\d{3}\)?[\-]?\d{3}[\-]?\d{4}$

Color Code:

Pattern: ^#{1}?([a-f]|[A-F]|[0-9]){3}(([a-f]|[A-F]|[0-9]){3})?$

This game is based on a paper game, Snake and Ladder. You may have played this game before. I have added nothing more. I have just programmed it for my nephews and nieces. They give me the inspiration for designing and programming this game. Hope you will like it.

Click this link if you want to download it

This is a puzzle game and it is freeware. You can freely distribute to your friends. It is mainly developed for children and for the beginners of computer operation. This will help them to improve their mouse movement. But anyone can play it and have fun. It is the first edition of the game. In this edition I have included 5 pictures’ puzzle. Hope you will enjoy the game.

To download a copy of the game click here

This is my first software developed with Visual Basic in 2003. It is a fun software. It looks like Love Calculator, but has difference in result. It does not show percentage. It describes the relation. As I told before it is a fun software, it may not be true all the time. I shall not tell you anything more. You may try it and don’t forget to send your comment.

You can download a copy from here

Many days ago I found a site that shows more than 500 data models. This site is run by Mr. Barry Williams. I found these models helpful for starting database design. And I think that anyone can learn professional database design from these models. Hope you will find something useful from this site.

So, before start designing a database visit this site. Who knows, your problem might have already been solved.

Site address: http://www.databaseanswers.org/data_models/