Practice with Boolean Operators, History, and Retrieving Data $($p$.67)$

l$.$ This following query statement was used to search the MMDB:

m$.("$uranium $"[$Chemical Synonyms$])$ AND "eubacteria"$[$Organism$].$

a$.$ What fields were searched in this query?

b$.$ What Boolean operator was used in this query?

$2.$ Look in the $$all fields$$ index. How many entries do you find for the following terms:

a$.$ antibiotic

b$.$ antibiotics

$3.$ Use a Boolean operator to combine search terms from two different fields and determine the number of nuclease structures from Staphylococci$*.$

a$.$ What query statement did you use to answer this question?

b$.$ What was your result?