What are the benefits of beginning an operation with a packaged logical data model?
What will be an ideal response?
An advantage of LDMs is that a packaged data model now exists for almost every industry and application area. Other advantages include:
• Validated. Purchased models are proven through extensive experience.
• Cost reduction. Projects with purchased models take less time and cost less because the initial discovery steps are no longer necessary, leaving only iterative tailoring and refinement to the local situation.
• Anticipate future requirements, not just initial requirements. Purchased models anticipate future needs, not just those recognized during the first version of an application. Thus, because the database structure does not require structural change, their benefits are recurring, not one-time.
• Facilitates systems analysis. The purchased model actually facilitates database planning and analysis by providing a first data model, which you can use to generate specific analysis questions and concrete, not hypothetical or abstract, examples of what might be in the appropriate database.
• Consistent and complete. The purchased data models are very general, covering almost all options employed by the associated functional area or industry. Thus, they provide a structure that, when tailored, will be consistent and complete.
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What occurs in anaphase?
A. The nuclear envelope disappears. B. Chromatids are separated and move to opposite poles. C. The nuclear envelope is constructed. D. Chromosomes line up along the equator of the dividing cell. E. Centrioles move to opposite poles.
Answer the following statements true (T) or false (F)
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The Incoterm for the situation where the product is delivered at the specified destination, the seller pays for carriage to the named place, as well as all duties, taxes, and customs charges, and assumes all risk until the goods are delivered to the buyer at the specified destination, is
A. DDP. B. CIF. C. DAT. D. DAP. E. FAS.