10.4. A Genetic Information Model
Let's envision a genetic-based information model. One method of basing our model is to start with a DNA sequence. This base is used by NCBI because GenBank is commissioned as a sequence database as opposed to a protein database such as Swiss-Prot. It is instructive to follow this starting point and see where it leads in terms of the variety of information that can be attached to a sequence that contains a gene. The information model and some of the data within the model will be somewhat contrived to bring out the key points. A detailed and accurate biological model is beyond the scope of this chapter.
Listing 10.1 is an XML document derived from an NCBI DNA sequence entry. For each sequence, a name or definition ...
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