5. A method as defined in claim 4, wherein the data characteristic statistics include an entropy function for the scanned records and the step of comparing includes the steps of: comparing the entropy function of the second block to a predetermined entropy threshold value; halting the repetition of the steps of selecting and comparing if the entropy of the second block is below the entropy threshold value; and storing the second record block in the interrogation buffer.
5. A method as defined in claim 4, wherein the data characteristic statistics include an entropy function for the scanned records and the step of comparing includes the steps of: comparing the entropy function of the second block to a predetermined entropy threshold value; halting the repetition of the steps of selecting and comparing if the entropy of the second block is below the entropy threshold value; and storing the second record block in the interrogation buffer. 8. A method as defined in claim 5, wherein each new first record block selected during the repetition of selecting and comparing comprises the combination of the previously selected first and second record blocks.