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  • yufeng chen
    Participant

    Dear Sir:
    I have another question about this example(main example 5 in 4.2.4 ): in this example, there have 9 Exits(include one Error msg).the answer told me :
    “Style Code” is a data group, Key attributes: “Style Code”, Frequency: “Many”, “Sales for a given Style in the whole Time-period” is also a data group, Key attributes: “Style Code, Time-period definition*”, Frequency: “Many”(One for each Style), I think “Style Code” may not be counted as a X separately, because It has the same frequency with data group: “Sales for a given Style in the whole Time-period”. The only reason data group “Style Code” is counted as a X due to it has different key attribute with data group “Sales for a given Style in the whole Time-period”, am I right?

    if it’s true, I will give you a another example, such as:
    FUR: list all the style’s total-sales in the given time period.

    the out put is :
    Time Period: xx month — xx month
    style total-sales
    S1 XX
    S2 XX
    S3 XX
    so in this example, we have 3 exits,
    X: DG: time period, Key: start month, end month, frequency: 1
    X: DG: style code, Key: style code, frequency: many
    X: DG: total sales for each given style during given time period, Key: style code, time-period, frequency: many(one for each style)

    Am I right?

    yufeng chen
    Participant

    Dear Sir:

    all the examples come from <COSMIC-Method-v4.0.1-Bus-App-Guideline-v1.3.pdf>,
    the first one comes from : section 4.2.4 Example 5,

    EXAMPLE 5: Report with two-dimensional multi-level aggregations

    A company designs and produces items of clothing. Each of its designs, known as a ‘Style’, is available in many Colour and Size combinations. A unique combination of these three parameters is known as a ‘Product-type’. This is a specification that the company manufactures and that can be ordered in bulk by a customer (e.g. a retailer)

    Figure 4.2 shows the relationships between the various objects of interest that make up the company’s product structure and how multi-item Orders relate to a Product-type. (The ‘crows-foot’ symbol in Figure 4.2 illustrates the degree of the relationship between the various objects of interest.)

    The size about this example is : 12cfp

    The second example is just following example 5:
    It is now interesting to demonstrate the applicability of Note 1 to the rule of section 2.6.2. Figure 4.4 shows the reports that would be needed if, for example, the sales amounts i) and v) in the list above were required to be output by separate functional processes.

    in this example, month/year is counted as a X, but in the first example, month/year DOSE NOT count as a X,
    so, that is my question:
    In section 4.2.4 Example 5, month/year DOES NOT count as a X, but in the next example, the Month/Year is counted as a X. what’s the difference rule used in this two examples? Thanks.

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