Before looking at these it is worth saying that much can be done about system security which does not involve high-tech methods and tools. The fact that users often choose passwords which are easy to crack, for example passwords which are their family’s names or which are so short they can be cracked by a [...]
Server Authentication
The client first checks whether the server’s digital certificate is valid for the date of the transaction: the certificate could have expired. Next the server checks whether the certification authority that issued the digital certificate associated with the server is a trusted authority. Usually the client will have a list of trusted authorities and [...]
SSL Server Functionality
This technology was originally developed by the Netscape Corporation for its browser Netscape Navigator. It works as a layer which lies between protocols such as HTTP and FTP and underlying protocols embedded in the TCP/IP suite. There are a number of functions embedded in SSL:
SSL server authentication. This enables a client to confirm [...]
Java was designed with security in mind from its first implementation. The reason behind this was the potential insecurities that were introduced by applets. However, the designers of the language, having targeted Java at the Internet, realised that much stronger facilities than those associated with applets were needed in the language. As a consequence some [...]
There are as many different tools as there are people to use them. Each tool has its own strengths and weaknesses, but also each tool is generally designed for a specific purpose. No one tool will do everything; certainly it will not do everything well. To help this discussion we can classify the usage of [...]
Data analysis tools are used to perform complex analysis of data. They will normally have a rich set of analytic functions, which allow sophisticated analysis of the data. These tools are designed for business analysis, and will generally understand the common business metrics, such as market share, churn and profitability.
Data analysis tools can again be [...]
The data warehouse is there to be accessed by users. The whole purpose of building the data warehouse is to give an identified set of users access to a particular set of data.
The whole area of access to the data is a minefield. There are a host of tools that can be used, each with [...]
Since a distributed system will have, as a given, the fact that data should be shared between users the decision to share an entity such as a relational table is not a decision that is taken by the designer. However, underneath the fact that data is shared are a number of design decisions which can [...]
Email Surveys Simple text-based email surveys
Implementing a simple email survey requires little technological expertise, and can be done with minimal software requirements. In its simplest form an email survey can consist in simply sending an email containing text questions in the body, and asking participants to hit the ‘Reply’ button on their mailer, fill in [...]
Enabling the Web server to deliver dynamic content. The Apache Web server can be configured to handle a number of these so-called dynamic page technologies, including PHP and JSP.
Loading and storing any programs (or scripts) which need to be executed when a Web page is processed. Typically these programs are associated with Web forms and [...]
The aim of this post is to describe an example Web server. The one which I shall describe is Apache. This is certainly the most popular Web server being used on the Internet at the time of writing.
There are a number of reasons why Apache is popular. The main one is that it is free. [...]
programming, html, software, web design, domain, hosting
One of the best-known enterprise frameworks is the J2EE (Java 2 Enterprise Edition) framework.
Java Database Connectivity (JDBC)
The JDBC API contains facilities whereby a relational database can be written to and read from. It allows the programmer to:
connect up to a database on a local or remote computer;
send programming statements in a language known as SQL [...]
When the owner of a Web site wishes to advertise that site with a search engine they will access a registration page at the search engine site. This page will usually contain a form which asks for details of the site such as its home page, the name and e-mail address of the person submitting [...]
In 2000, Microsoft announced what is probably its largest software development programme. It was known as .Net and involved configuring many of its products such as Excel, Word, MS Access together with its supported programming languages such as Visual Basic and C++ so that they are seamlessly integrated with the Internet and with each other.
There are a number of ways in which companies can make money from the Internet. Probably the best known way of making money is by selling some commodity; this could be a non-IT commodity such as a CD or item of clothing or it could be some piece of application software, a font, a browser [...]
Qualitative content analysis has a long tradition from analysis of texts (notably the Bible) and more recently mass and multimedia productions. This research is often interpretative in nature and is associated with critical, phenomenological, hermeneutic, semiotic, and other forms of qualitative research. Some of these techniques and the rich tradition that accompanies this form of [...]
We’ve become quite casual about the mainstreaming of the Web—we can’t get through a nightly TV news show or morning classical radio program without being told there’s more on a story or a playlist available on the station’s Web site. Pointers in printed marketing, collateral, newsletters, magazines, journals, and books—including this one!—to visit Web sites [...]
As the reader may have discovered by now, when the ‘Send data‘ button is clicked, no testing occurs to ensure that form elements have been filled in, checked, or selected; it is quite easy for participants to supply no information at all and just submit an empty form. Happily, it is possible to use JavaScript [...]
Incorporating JavaScript in HTML documents is quite easy, and can add many useful features to your pages. You should note that not every browser supports JavaScript, and even though most do, not everyone will have it enabled, so you need to consider what happens when it is disabled. Sometimes, the system can still work without [...]
