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After studying the Crow's Foot notation, y o u are n o w ready to apply your knowledge. This section presents guidelines to analyze information needs o f business environments. The guidelines involve analysis o f narrative problem descriptions as well as the challenges o f determining information requirements in unstructured business situations. After presenting the guidelines, they are applied to develop an E R D for an example business data modeling problem.

You say that classes, structures, methods, interfaces, and delegates can be generic. What about properties, operators, indexers, and events Properties, operators, indexers, and events cannot declare type parameters. Thus, they cannot be made generic. However, they can be used in a generic class and make use of the type parameters defined by that class.

The security appliances support a handful of network attack prevention features: Threat detection TCP normalization Connection limits and timeouts IP spoofing prevention

Interpreting the results. The third and final step in the process is the most important: interpreting the results. Although the graphical presentation of network performance statistics greatly facilitates interpretation, it still requires a certain degree of networking expertise to draw appropriate conclusions from the data. Every network is different and network performance data must be analyzed on a case-by-case basis. Nonetheless, there are three general rules that apply to most situations:

Continuous online auditing permits the IS auditor to conduct audits of an online environment in a way that is less disruptive on business operations. Instead of more costly and invasive audits, IS auditors can test systems while they are running and with minimum or no involvement from IT staff. Continuous auditing techniques, also known as Computer-Assisted Audit Testing (CAAT), are especially useful in applications such as an

rapid construction and advantages in terms of life cycle costs (e.g., corrosion resistance). FRP is a strong material, lightweight, durable, impervious to deicing salts, weather resistant, and has a low life cycle cost. It is a composite material consisting of high strength thread like bers embedded in epoxy or polyester resin. There are a variety of ber types and resins which can be used as composites. The bers are glass, carbon, or aramid, which are brittle in solid form but have high strength in ber form. Some of the earliest composite materials were introduced in Egypt for mud bricks with added straw to make the material stronger. 3. FRP is available in a variety of forms such as FRP bars, FRP grids, and tendons for prestressing. The combination of plastic and bers produces great mechanical properties resulting in a lighter weight material that is durable. It is increasingly being used in strengthening applications and for deck replacements. Longer spans are now possible with lightweight aggregates and FRP, which replaces more expensive steel reinforcing bars. 4. Corrosion is the most common type of distress or deterioration in concrete bridges. Replacing a traditional steel bar with a FRP bar eliminates the expansion that comes with corrosion associated with steel embedded in concrete.

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It returns an object of an anonymous type that has two read-only properties, Name and InStock. These are given the values specified by the item s name and availability. Because of the anonymous type, there is no longer any need for the Temp class. One other point. Notice the foreach loop. It now uses var to declare the iteration variable. This is necessary because the type of the object contained in inStockList has no name. This situation is one of the reasons that C# 3.0 added implicitly typed variables. They are needed to support anonymous types. Before moving on, there is one more aspect of anonymous types that warrants a mention. In some cases, including the one just shown, you can simplify the syntax of the anonymous type through the use of a projection initializer. In this case, you simply specify the name of the initializer by itself. This name automatically becomes the name of the property. For example, here is another way to code the select clause used by the preceding program: