Nt1320 Unit 4 Elements Of Database Language

A database language should offer the flexibility to perform these tasks while not vast effort from the user, and its command structure and syntax ought to be comparatively simple to be told. It should follow a recognized customary in order that identical command structure and syntax are often used to once moving from one DBMS to a different.

SQL is meant to satisfy a variety of necessities. SQL is taken into account a transform-oriented language, in alternative words, it makes use of relations to remodel inputs into the specified output. the two major elements of the ISO SQL customary are the Data Definition Language (DDL) that defines the structure of the database and controls the access to the data and an information Manipulation Language

The client-side programming technologies accustomed build web applications and web pages that square measure run on the client (i.e., within the browser on the user’s device). HTML, CSS technologies and JavaScript language square measure accustomed add fun, dynamic and powerful characteristics and effects to net applications and pages, like animation, audio, Image manipulation, video, drawing, designing pages for various screen sizes and additional.

The server-side programming is that the applications that reply to the client-side requests from net browsers, like ordering a book from Amazon, looking the net. There are three communal server-side technologies, as well as PHP, ASP.NET (either C# or Visual Basic) and Java Server Faces.

3.2 what's the Web

The web designer doesn’t require to be knowledgeable in web programming, he simply ought to understand some vital code to form the website basis. 3.8.1 HTML The web page may be a plain text appears absolutely formatted in a web browser as a result of it's been encoded using (HTML) The hypertext mark-up language means:

●Hypertext is the text that clicked by the user so as to leap from one document (Web page) to a different.

●Markup is the tags that apply the layout and data formatting to the plain text.

●Language the actual fact that HTML may be a language not a programming language. The language may be a set of markup tags.

HTML tag may be a keyword enclosed in angle brackets like, the primary tag in a very try is that the begin tag (opening tag); the second tag is that the finish tag (closing tag). Figure [3-6] shows an easy example of hypertext mark-up language program.

Figure [3-6]: HTML Example

3.8.2 CSS The Cascade Style sheet is employed to feature the visual format to the online page. CSS rules are outlined as a property name followed by a colon then a property worth. Individual rules square measure terminated by semicolons, with the ultimate rule having an optional semicolon. the subsequent is that the basic