Answer to Question 1
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.
Answer to Question 2
FALSE
Critical thinking involves analysis in which the nurse examines patient data available from a variet
Dimensions for gathering data
Different modes of operation of the pentose phosphate pathway
The Benefits of Physical Fitness (2 of 2)
The Malthusian Model
Opener Bronze sculpture of the Watson–Crick model for double-helical DNA