Views can be utilized as a form of security in the database. Let’s say you have a table called EMPLOYEE_TBL. The EMPLOYEE_TBL includes employee names, addresses, phone numbers, emergency contacts, department, position, and salary or hourly pay. You have some temporary help come in to write some reports; you need a report of employees‘ names, [...]
Consistency is good anyway
Consistency can certainly be misapplied in UI design, but that doesn’t mean we should abandon the concept. Just because we don’t have a formal definition of consistency doesn’t mean that the concept is useless. It clearly has value to software users, even though their ideas of what is and is not consistent [...]
The right way to design: Think outside-in
Thinking outside-in when designing a UI means making sure it makes sense to people who do not know everything you know about it. This doesn’t mean you should assume users are stupid. They probably know more than you do about the software’s supported tasks. What users don’t know is [...]
In any task domain, users will have goals ranging from common to rare. Design your application to recognize this range.
Make common results easy to achieve
If a user’s goal is predictable and common, the user shouldn’t have to do much to achieve it. Unusual goals may require more effort to achieve. Stated more formally: The amount [...]
How your business approaches Web marketing depends largely on what you want to accomplish with the project. You can spend a ton of money establishing an impressive site with lots of features, but if all you’re after is a corporate presence, you’ll probably be wasting your resources. On the other hand, if you pinch every [...]
You may think this next section is somewhat out of place titled “The Internet and the Law”—we’re going to talk about much more than the legalities of international trade. If you are new to international (or even interstate) commerce, you should consult with an attorney before exploiting these new markets. There are some issues you [...]
A banner ad is a graphic advertisement, usually in the form of a GIF image, that appears on a Web site and is linked to a page on the advertiser’s site. Most banner ads measure 468 pixels wide by 60 pixels long and appear at the top of a page. Much smaller versions of banner [...]
Here are some of the questions to ask yourself and your online business partners in order to calculate your site’s exposure and plan its response to the risks associated with underage users:
A protocol is a series of steps taken to accomplish a task. In fact, this is also the definition of an algorithm, but we use algorithm to refer to the attainment of internal, mathematical results such as encrypting a block, and protocol to refer to the attainment of user-visible results such as secret communication and [...]
Directed Attack over the Network
After more than a decade of computer viruses, PC users are beginning to appreciate the dangers of loading new software on their machines. A computer connected to a network, however, is subject to additional forms of attack, based on content and automatically installed software rather than user-installed software.
If you are running Fedora Core 3, SuSe 9, Mandriva 10.1 Debian, or Gentoo 1.4., you should not have any trouble using the Skype API. As previously mentioned, to write to the Skype API on Linux, you must have the D-BUS distributions. Once you have built the D- BUS components, you can update the /etc/dbus-1/system.d/skype.conf [...]
Can Users Access Different Databases?
I’m talking about different databases of information from the same tool, not necessarily different DBMS products. For example, a user may access the regular data mart stored on a local Windows NT server for most queries and reports and, by using the same tool, have access to this information:
Another department’s data [...]
Few things are more frustrating than successfully building a data ware- house and then having it rendered unusable by less-than-satisfactory user tools. This post presents some questions to consider when you’re evaluating tools you’re considering purchasing.
Can Users Easily Budd Their On Query and Report Screens?
In most data warehousing environments, a substantial number of report and [...]
Hardening is an important process, another way to harden the network is to use network access control (NAC). There are several different incarnations of NAC available. These include infrastructure-based NAC, endpoint-based NAC, and hardware-based NAC.
Infrastructure-based NAC requires an organization to be running the most current hardware and OSes. OSes such as Microsoft Vista has the [...]
Some types of asymmetric algorithms are immune to MITM attacks, which are only successful the first time two people try to communicate. When a third party intercepts the communications between the two trying to communicate, the attacker uses his own credentials to impersonate each of the original communicators.
Beware of the key exchange mechanism used by [...]
Without standards and protocols, a juggernaut like PKI would become unmanageable. For a real-life example, look at the U.S. railroad system in its earlier days. Different railroad companies were using different size rails, and different widths between the rails. This made it impossible for a train to make it cross-country, and in some cases, across [...]
Public Key Revocation
It is sometimes necessary to revoke a person’s (or company’s) certificate before the expiration date. Usually, revocation occurs when:
A company changes ISPs, if its certificate was based on its ISP’s Domain Name Server (DNS) name or its IP address, rather than the company’s own DNS name, or if the ISP had access to [...]
A good data warehousing consultant has certain abilities in dealing with people and a knowledge of various aspects of data warehousing. This lets you in on a few tips.
Broad Vision
Even a data warehousing consultant who is an expert in a particular area (star schema design in a relational database in support of OLAP functionality, for [...]
Somebody Leaves the Company leave the Unsolved Problem
You’ve done a fantastic job of selling the business value of your data warehousing project to executive management, and everything is rolling along nicely. Suddenly, two days after a stunning announcement of disappointing quarterly sales and earnings, the executive sponsor from the business side of the organization resigns. [...]
Movements of nodes in a mobile ad hoc network cause the nodes to move in and out of range from one another. As a result, there is a continuous making and breaking of links in the network, causing the network connectivity (topology) to vary dynamically with time. Since the network relies on multihop transmissions for [...]
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