A10: Testing is an activity conducted to evaluate the quality of a product and to improve it by identifying defects and problems. Testing is part of analytical quality assurance measures and it is one of the most important instruments in the development of Web applications.

Q11: What are the TESTING OBJECTIVES?

A11: The main test objective is to find errors, rather than to show their absence. We can say that testing has to detect as many errors as possible, ideally as many serious errors as possible, at the lowest cost possible, within as short a period of time as possible, and as early as possible.

Q12: What is de difference between the conventional approaches and agile approaches?

A12: Conventional approaches define work results, roles and detailed steps to create the work results, while agile approaches, define the quality goal and then rely on the team to self-organize to create software that meets the quality goal.

Raspuns scurt: While agile approaches focus on collaboration, conventional approaches focus on planning and project management.

A7: Java Server Pages (JSP) are designed to simplify the programming of graphically sophisticated HTML pages created on the fly. Java Server Pages extend conventional HTML pages with special JSP tags, allowing the integration of Java program code to create dynamic contents. Upon their initial invocation, the runtime environment translates JSPs into servlets, and they then create the corresponding HTML response pages.

Q8: Describe SOAP – Simple Object Access Protocol.

A8: The Simple Object Access Protocol represents a simply way to exchange messages on the basis of XML. Comparable approaches are, for example, the Internet Inter-ORB Protocol (IIOP) in CORBA , Sun’s Remote Method Invocation (RMI) in Java, or Microsoft’s .NET. To allow Web services to communicate smoothly, we need a uniform message protocol, which is independent of the underlying platform. SOAP represents such a message protocol based on XML.

Q9: What represent Application Servers?

A9: Application servers are closely related to the concept of a 3-layer architecture. They denote a software platform used to process online transactions (OLTP). A 3-layer architecture moves the application logic from the client to the application server. The client normally runs as a so-called thin client without any logic at all. The third layer is represented by backend systems.

A4: The Document Object Model (DOM) introduces an object-oriented view on XML documents, allowing the easy and intuitive processing of XML. A DOM is created by an XML parser, which parses the structure of an XML document and instantiates an object tree. Each XML element in this tree corresponds to a node. The benefit of this method is to access the nodes in an object-oriented way, once the DOM has been created. The drawback is that this approach is rather costly, because an XML parser is needed to first create the tree.

Q5: What represent DTD (Document Type Definition)?

A5: A DTD represents a set of rules which can be used to describe the structure of an XML document. XML borrows DTDs from SGML. Thanks to their simple structure, DTDs are relatively easy for humans to understand. This is why they are useful mainly when they have to be created or maintained manually. Because of their simple structure, DTDs cause two distinct problems, which are eventually solved by XML schemas: a) DTDs have been borrowed from SGML is often considered a problem, because it requires a DTD parser to read the grammar. It would be better to also notate the grammar itself in XML, so that existing XML parsers could read it; b) although some data types can be used to define elements or attributes within DTDs, their extent is very limited.

Q6: Give a definition of XSL – eXtensible Stylesheet Language.

A6: XSL stands for eXtensible Stylesheet Language (W3C 1999a) and consists of three parts: XSL Transformations, XPath, and XSL-FO. XSL includes a standard to transform and format XML. XSLT is a language to define patterns and rules for their transformation, representing the core of XSL. While XSL-FO is used to clearly define a formatting style, it represents only one of all possible transformation results for XSLT. For this reason, XSL can be compared to the Model-View-Controller design pattern as a general categorization. The model corresponds to XML documents, and the controller corresponds to XSLT.

A1: The concept of markup originates from the publishing industry and generally means typographic instructions for document formatting. These instructions are specified inside a document in the form of additional characters. For example, we could write *Hello* to output Hello or /Hello/to output Hello. Semantic markup lets us write comments within text without showing them in the document.

Q2: What is the definition of Cookies?

A2: Cookies are small text files used to store server information on the client computer. This information is written to a text file in the form of name-value pairs. Cookies are generated by Web servers and transmitted to clients in the header of the HTTP response. The client’s Web browser stores a cookie on the client computer and will then always use this cookie to transmit it to the server that generated the cookie with each request. Cookies are typically classified as either “session” or “permanent” cookies.

Q3: Give a definition of RTSP (Real Time Streaming Protocol).

A3: The Real Time Streaming Protocol represents a standard published by the Internet Engineering Task Force (IETF), and is designed to support the delivery of multimedia data in real-time conditions. In contrast to HTTP, RTSP allows the transmission of resources to the client in a timely context rather than delivering them in their entirety (at once). This transmission form is commonly called streaming. Streaming allows us to manually shift the audiovisual “time window” by requesting the stream at a specific time, i.e., it lets us control the playback of continuous media.

This vacation I started to study PHP and how to implement the recommended systems and … EVRIKA … today I finalized the part with User-based Collaborative Filter. I’ve encountered some problems trying to display , but … all’s well that’s ends well!

Pentru ca, a integra un cod java intr-un cod php s-a dovedit a nu fi deloc usor, ne-am gandit si la varianta in care fiecare dintre noi va prelua un algoritm de recomnadare de la DUINE si il va scrie in php. Lucrurile nu sunt nici aici simple, din contra…pentru a putea prelua unul sau mai multi algoritmi ar trebui sa preluam tot codul, respectiv sa il scriem in php…ceea ce nu este indicat. Am gasit si ceva scris direct in php, VOGOO- Recommendation Engine and Collaborative Filtering; contine atat algoritmi pentru filtrarea colborativa bazata pe item cat si pentru filtarea colaborativa bazata pe utilizator, algoritmi pentru rating, statistici, etc. De aici puteti descarca ultima versiune, iar in manualul de utilizare gasiti explicatia fiecarei functii. Vom lua o decizie maine la laborator, dar pana atunci vom aborda ultima, dar nu cea din urma solutie, implementarea algoritmilor de recomandare studiati si la Comert Electronic (Pearson)

Happy New Year 2010!

In this tutorial, you will be guided (step-by-step) through the process of building and working with objects using php’s built-in OOP capabilities. At the same time you will learn:
• The difference between building a php application the old fashioned (procedural) way, versus the OOP way.
• What the basic OOP principles are, and how to use them in PHP.
• When you would want to use OOP in your PHP scripts.
People run into confusion when programming because of some lack of understanding of the basics. With this in mind, we are going to slowly go over key OOP principles while creating our own PHP objects. With this knowledge, you will be able to explore OOP further.
For this tutorial, you should understand a few PHP basics: functions, variables, conditionals and loops.

Tutorial -> oop_in_php_tutorial_for_killerphp.com

Hypertext Pre-processor  (PHPs) is a  server-side scripting language, and  server-sidescripts are special commands you must place in Web pages. Those commands are processed before the pages are sent from your Server to the Web browser of your visitor. A typical PHP files will content commads to be executed in the server in addition to the usual mixture of text and HTML (Hypertext Markup Language) tags.

When you type a URL in the Address box or click a link on a Web page, you’re asking a Web server on a computer somewhere to send a file to the Web browser (sometimes called a “client”) on your computer. If that file is a normal HTML file, it looks exactly the same when your Web browser receives it as it did before the Web server sent it. After receiving the file, your Web browser displays its contents as a combination of text, images, and sounds. In the case of an PHP page, the process is similar, except there’s an extra processing step that takes place just before the Web server sends the file. Before the Web server sends the PHP file to the Web browser, it runs all server-side scripts contained in the page. Some of these scripts display the current date, time, and other information. Others process information the user has just typed into a form, such as a page in the Web site’s guestbook

To distinguish them from normal HTML pages, PHP files are usually given the “.php” extension.

If you still have problems with php implementation… check here more tutorials.

Am folosit si EasyPhp care contine Apache + PHP + MySQL + phpMyAdmin am rulat exemplul (am compilat mai intai salesTax.java pentru a obtine salesTax.class, si apoi am rulat salesTaxInterface.php), dar rezultatul nu a fost cel asteptat …

O sa incerc si “Xampp Lite!”. Este un proiect foarte bun care pune la dispozitie nu doar Apache, MySQL si PHP ci si conexiuni SSL, PHP MyAdmin, server FTP, server email. Este comod, portabil, complet, functional! Promit sa va dau vesti mai bune data viitoare