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Because drum lugs are arranged in opposite pairs at the top and bottom of the drum, you can duplicate your joined lug object by choosing Object Duplicate on the lower toolbar (keyboard shortcut Shift+D), rotate the copied object, and move it into position next to the hoop at the other end of the drum. When that s done, you can join the upper and lower lugs to make a single object, duplicate this new object five times, and move the copies on the X and Y axes until they re evenly spaced around the outside of the drum shell object (see Figure 6-33). After rotating the copied lug and tension rod objects so that they face the drum shell object, you end up with a drum model with 12 lugs 6 holding down each hoop. All the lugs and tension rods should be identical, because they ve been duplicated from the same original model.

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1. I feel bound to say immediately that I was never much of a fan of such pictures. E/R diagrams in particular, while they can be useful for explicating the structure of the database at a high intuitive level, are virtually incapable of representing integrity constraints (except for a few special cases including foreign key constraints in particular that are admittedly important in practice). So far as I m concerned, by contrast, database design is really all about specifying integrity constraints! that is, database design is constraint definition. I ve elaborated on this argument in a recent book (WHAT Not HOW: The Business Rules Approach to Application Development, Addison-Wesley, 2000) and elsewhere. 2. As the following extract shows, I do believe the term model can be given a sensible meaning in appropriate contexts (see the next section for further discussion). The trouble is, it s often used in contexts that are utterly inappropriate, with meanings or intended meanings that can only be guessed at.

To start working with Flash Builder 4, plug in the following process: Open Flash Builder 4. Select File New Flex Project. Call the project FlexUnitExample, and hit ok. You are now ready to get started. Traditionally, many processors will require you to go to the white board and start creating a diagram such as UML before starting the work; however, creating the diagram first can increase your development time. Consider the following example: You get a task with business requirements, but since you did not do the work yet, you can only assume how things are going to be. Then your diagram can be driven by what you think you need rather than what you really need. TDD turns everything upside down. You start with your business requirements as can be seen in the following.

A data model in the second sense is like a specific program written in the language referred to in the previous paragraph In other words, a data model in the second sense takes the facilities provided by some model in the first sense and applies them to some specific problem; it is a model of the persistent data of some particular enterprise It can be regarded as a specific application of some model in the first sense The subject article s use of the term data model in the sentence quoted above ( The UML does not explicitly include a data model .. in the object world ) refers, I think, to the first of these two senses But then it says that it ie, the data model would better be called a persistence model! A data model is a model of data ...

You need a utility class that will be able to read an XML file with employee s information. Once the employee s information is retrieved, it can be parsed into a value object class. The information will then be displayed on a screen. With these requirements in mind you can continue.