is prohibited.
tabase is a physical data source. The attribute buy_sell_daily_balance is
computed as the difference of two attributes representing daily buys and
sales, that are located in two different tables, in two different databases:
the ???BuysCentral??? database and the ???SalesCentral??? database. Thus, buy_
sell_daily_balance is a logical data source. We will give this data source
a name, say LDS_1 (standing for Logical Data Source 1).
??? Interviews:.DSS-METRIQ considers two kinds of interviews: (a) group interviews:
in the requirements phase, JAD is used (Christel & Kang, 1992); and (b)
individual interviews: the user requirements, mainly from the data consumers,
can be obtained through traditional structured or unstructured interviews.
Supporting.Elements
DSS-METRIQ provides elements for supporting the management of the information
collected throughout the process. These elements are forms, matrices, a data
dictionary, and an aggregations dictionary. Forms are elements that register the
collected information. As usual, forms are divided in two main sections: the heading
and the body. The heading contains name of form, phase of the methodology, step
within the phase, version, and revision number. In the body of the form, the collected
or generated information is written. Of course, forms can be updated during
the process.
Pages:
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155