Abstract: A method(s) of testing AN/ULQ-21 (Hydra) Circuit Card Assembly(ies) (CCAs), which involve providing software to perform automated tests on Hydra CCAs that make up the Hydra Countermeasures Set and employ commercial off the shelf equipment (such as signal generators, spectrum analyzer, Data Acquisition Device(s), oscillators, etc. as applicable depending on the test and CCA being evaluated).

Abstract: A method of indexing data in a multidimensional database includes creating a multidimensional logical access model, creating a multidimensional data storage model in which data is located in cells that are stored and retrieved in blocks, gathering data access information derived from one or more user queries of the database, and reorganizing one or more selected cells in the multidimensional data storage model based on the data access information to reduce the time taken to access the one or more selected cells in response to a user query of the database. A computerized apparatus in communication with a multidimensional database includes a program to perform the method. A computer readable medium contains instructions to cause a computer to perform the method.

Abstract: A method of managing cells formed from a tuple of members in a multidimensional database include treating at least one dimension in the database as a plurality of hierarchically structured members divided into at least two levels, thereby defining a validation curve as the location of an intersection of the levels. What level the cells in the database are located is evaluated. Cells contained in a lower level are managed by automatically indicating them as one of valid and invalid at data load time, and cells contained in an upper level are managed by indicating them as one of valid and invalid according to a method involving at least one of less reading from and writing to the database at data load time than if all the cells in the upper level were indicated as one of valid and invalid at data load time. A computerized database management system uses a communication interface to practice the method.