Informatica

ARTICLE DATABASE.

The possibility to query from Internet a database, in a direct way and by means of a navigator (browser) type like Netscape or Explorer; that allows to consult a group ofinformation formed by texts, graphics, video and sound; opens an immense panorama for the popularization of the multimedia information banks, which would be limited in another way to consultations for areduced number of users from a local network (Intranet).
The exponential growth of users and Internet sites make indispensable to manage this type of resources to be able to embrace potential users’groups distributed in the whole planet. Most of the users that navigate in Internet make it through hyperlinks , not requiring a special training. The database manager in this case 4th Dimension,takes charge of negotiate the consultations to the database and to transform the forms to code HTML (HiperText Marked Languaje) in a transparent way, so that the user doesn’t have to learn how to managenew tools.
What is presented here is a development example that allows to understand the different components from a on-line consultation system through the Internet.
The management of informationthrough databases has been one of the major application fields within computer science. Over theyears there have been many data managers such as Oracle, Informix, FoxPro, etc. 4th Dimension. Theyallow an easy and efficient way to manipulate data, ie insert, modify, search, delete, generate reports, etc ...
Usually installed on a server operating data which many usersconnect-calledclients, through a local network such as Intranet. For several years the tools have advanced greatly,
in relation to data handlers see how you can work with new field types such as graphics, animation andsound, which were previously impossible to handle. This has been true multimediadatabases.
  Another area where there has been an important development isthe possibility of
Connect these databases to...