11. The information handling system of claim 9 wherein the actions further comprise: selecting a set of data sources included in the corpus of knowledge, wherein the selected set of data sources are related to a common domain of information; extracting a plurality of words from the set of data sources; calculating a domain-usage frequency for each of the plurality of words, wherein the domain-usage frequency is the frequency that each of the plurality of words occurs in the set of data sources; retrieving a general-usage frequency for each of the plurality of words, wherein the general-usage frequency is the frequency that each of the plurality of words occurs in general language usage; for each of the plurality of words, comparing the domain-usage frequency of the word with the general-usage frequency of the word; and identifying a set of the plurality of words from the plurality of words as the plurality of key words, the identifying based on the comparison revealing that the domain-usage frequency corresponding to each word in the set of the plurality of words is statistically significantly higher than the general-usage frequency corresponding to the respective word.
11. The information handling system of claim 9 wherein the actions further comprise: selecting a set of data sources included in the corpus of knowledge, wherein the selected set of data sources are related to a common domain of information; extracting a plurality of words from the set of data sources; calculating a domain-usage frequency for each of the plurality of words, wherein the domain-usage frequency is the frequency that each of the plurality of words occurs in the set of data sources; retrieving a general-usage frequency for each of the plurality of words, wherein the general-usage frequency is the frequency that each of the plurality of words occurs in general language usage; for each of the plurality of words, comparing the domain-usage frequency of the word with the general-usage frequency of the word; and identifying a set of the plurality of words from the plurality of words as the plurality of key words, the identifying based on the comparison revealing that the domain-usage frequency corresponding to each word in the set of the plurality of words is statistically significantly higher than the general-usage frequency corresponding to the respective word. 12. The information handling system of claim 11 wherein the actions further comprise: searching a plurality of schemas corresponding to the structured database for the plurality of key words; finding a selected one of the key words in a selected one of the schemas, wherein the selected schema corresponds to a selected database table included in the structured database; and building the initial structured query language expression to search for the selected key word in the selected database table.