Abstract: An apparatus includes a renaming component to homogenized query instructions for retrieving data items from a data set organized using index labels by identifying a declaration instruction associating an object thereof with an index label, replacing the name provided to the object the with an archetypal name based on the index label, and generating change data associating the name with the archetypal name; a hashing component to take an instruction hash of the homogenized instructions; a cache control routine to find a matching instruction hash corresponding to results of earlier database queries in a results cache; and a reversal routine to, in response finding a matching instruction hash, retrieve a cached result from the results cache associated with the matching instruction hash, and replace a name of a different object therein based on the change data and the query instructions to generate a new result of the new database query.

Abstract: An apparatus includes a renaming component to homogenized query instructions for retrieving data items from a data set organized using index labels by identifying a declaration instruction associating an object thereof with an index label, replacing the name provided to the object the with an archetypal name based on the index label, and generating change data associating the name with the archetypal name; a hashing component to take an instruction hash of the homogenized instructions; a cache control routine to find a matching instruction hash corresponding to results of earlier database queries in a results cache; and a reversal routine to, in response finding a matching instruction hash, retrieve a cached result from the results cache associated with the matching instruction hash, and replace a name of a different object therein based on the change data and the query instructions to generate a new result of the new database query.

Abstract: A protective covering is described comprising at least one microporous film attached to a functional layer, the protective covering capable of inhibiting the passage of toxic substances therethrough. Preferably the functional layer is an adsorptive layer contained between two oleophobic, microporous films. Additional shell and backer layers may be added to the construction forming a protective covering having good durability, flexibility and high moisture vapor transmission.