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Stephen Collett

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Data Fields

Posted on 16/11/2013 at 08:37 - 0 Comments - Post Comment - Link

The databases organize your information as a general structure that identifies them. Each database is composed of tables where records are stored, which in turn are classified according to the different fields. The fields are the characteristics or properties of data. A field can have various values , which must be identified by the database. This identification then accelerate search processes and optimize data in memory processes. Each database can contain various and specific values , but there is a standard classification of these values , in which we highlight the alphanumeric data (letters and numbers, with a maximum length of 255 characters), numeric (can be integers, decimals, etc..), boolean (true or false), dates (to sort the records according to the dates or calculations of days, months, years, etc..), memos (not indexable alphanumeric data), and autoincrementables (they have provided to increase the value of a record one and based on integers).

The language SQL

The SQL (Structured Query Language) is a standard set of statements developed exclusively for the processing of data in databases. This means that it is a programming language dedicated to unifying all the alternatives of the different languages and various options in terms of databases through a set of common, predefined commands. This makes the programming system universal in databases. Because there are multiple programming languages and databases, would be very complex to manage information if SQL does not exist. SQL has the main feature being able to establish optimum communication (both sending and receiving data) with any programming dynamic system servers, such as ASP or PHP (is much more compatible with the latter), in combination with any type of database data (MS Access, SQL Server, MySQL, etc..). Despite being a standard language, it has the same characteristics for all databases. This means that each class database and may include certain specific options may not work in others.

MySQL

MySQL is one of the most used applications on web servers to manage databases. Originally developed for UNIX / Linux, but with the standardization became a fundamental tool, also on Windows. One of its main advantages is that it is open source software, freely distributable.
As for technical features, we can highlight its speed, stability and ease of use, comparing with other DB administrators. As we know, a database is a set of structured data into tables, records and fields. It can be a simple list of products to an endless amount of information from a large corporate enterprise. MySQL function is to act as administrator of the data, allowing us add, modify, delete, and access to them, then the end user to consult. For all this, MySQL used as structure in their database relational model, which index the data in tables. This is what makes MySQL faster and flexible, making it possible to connect one table to another by defining different relationships, while allowing each data link requested by the user.

Why use MySQL ?

Simply by three factors that characterize it: speed, stability and usability. If we add to our web server to tell a complete tool with infinite possibilities of interaction with the user (for example, validation systems, discussion forums, guestbooks, etc..), MySQL Server will be the best option. Its connectivity and high-level security can guarantee us a complete system of permanent mass storage so that users logging on our site to enjoy a wide range of services and can be, among other things, recognized by our server or save the data you need in our databases.


Your online guide for websites

Posted on 27/10/2013 at 18:19 - 0 Comments - Post Comment - Link

More categories

The server code categories are only available for editing pages using a scripting language such as ASP or PHP, and contain specific tools for insertion into Code view. The Application category groups inserting different dynamic elements. Moreover, according to the language chosen, a category appears under the name of language.

The main screen
Then the Text category lets you insert different text formatting tags and lists. We also have the category below, giving us the ability to insert and edit tags for section, horizontal rules, tables, frames and scripts. There is also the category Flash, which as its name implies, lets you embed objects created in Macromedia Flash, such as animations, menus, etc.. The last category is Favorites, you can customize the bar.

The Property inspector
To modify the properties of the elements quickly and easily, we have a panel located on the bottom of the program window, called the Property inspector. Through the various options offered by this panel, you can edit a number of specific characteristics of each selected item, always depending on the type of object it is.

Supported formats
One of the steps during installation of Dreamweaver will select the destination folder for the program, ie, one in which will be installed in your hard drive. It is best to leave the defaults. We also present a list of file formats in which we want to mark the prefilled are edited with Macromedia Dreamweaver.
For example, if you select a picture, the Property inspector displays a number of options, including size, the source path or contour. However, if you select a section of text, we provide options to change the color, format, font, page size, etc..
basic Tasks
We have already reviewed the theory of all fundamental components of Dreamweaver workspace. From now on, we begin to analyze the way in which you can perform all the tasks that we can perform this powerful editor of Macromedia. To begin, first we will see how to perform the most basic actions such as file handling, and then examine the functions of the application with respect to the website such as the insertion of the different elements and basic conformation a page.

The main screen
New Files, Open and Save
The basic tasks of file within the File menu. To create a new document will have to go to File / New.... By doing this, we present a new picture where we have to select the file type will be created webmagnat.ro click for info. Among all the options, we have to select the HTML format, which is the language that we handle. The remaining options are variants in different languages , usually for working with language servers. In contrast, to open an existing HTML file, that is, which is already on your hard drive, we have to resort to File / Open..., and in the new box, browse your hard to find and press the Open button. Finally, to store a file on your hard recently published, we will have to go to File / Save (this option use it for new files or to save changes to an existing file). If we want to save the file with another name, would have to use the File / Save As....

 


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