Abstract: An example device in accordance with an aspect of the present disclosure includes an initialization engine and a system usage engine. The initialization engine is to generate a collection of signatures representing canonical data and structure in canonical data. The system usage engine is to create a generated signature of a transformed datum, compare the generated signature to the collection of signatures, and identify a class of the generated signature based on the comparison.

Abstract: According to one aspect, an index that is built on a table having a plurality of rows comprises an index entry that contains a key value for a sub-part of a row and that includes data for locating a row and data for locating, within the row, a value associated with the sub-part of the row. In one embodiment, the sub-part of the row is an array, with each member of the array represented in the row.

Abstract: According to one aspect, an index that is built on a table having a plurality of rows comprises an index entry that contains a key value for a sub-part of a row and that includes data for locating a row and data for locating, within the row, a value associated with the sub-part of the row. In one embodiment, the sub-part of the row is an array, with each member of the array represented in the row.

Abstract: Techniques are provided which address the problems associated with the conventional approaches for storing multidimensional data in a relational database system. According to technique, the many foreign key values of each row in the fact table are mapped to and replaced by a “replacement” value. A mapping function is provided that derives a replacement value from any given combination of foreign key values, and an inverse mapping function is provided to reproduce the combination of foreign key values given the replacement value. A mapping function is selected such that the foreign key value combinations of multidimensional values that are conceptually related to each other map to values that are close to each other. The rows in the fact table are then stored within the fact table in the sorted order, thus causing values that are conceptually related to each other to be stored physically near each other within the fact table.

Abstract: Techniques are provided which address the problems associated with the conventional approaches for storing multidimensional data in a relational database system. According to technique, the many foreign key values of each row in the fact table are mapped to and replaced by a “replacement” value. A mapping function is provided that derives a replacement value from any given combination of foreign key values, and an inverse mapping function is provided to reproduce the combination of foreign key values given the replacement value. A mapping function is selected such that the foreign key value combinations of multidimensional values that are conceptually related to each other map to values that are close to each other. The rows in the fact table are then stored within the fact table in the sorted order, thus causing values that are conceptually related to each other to be stored physically near each other within the fact table.

Abstract: Techniques are provided which address the problems associated with the conventional approaches for storing multidimensional data in a relational database system. According to technique, the many foreign key values of each row in the fact table are mapped to and replaced by a “replacement” value. A mapping function is provided that derives a replacement value from any given combination of foreign key values, and an inverse mapping function is provided to reproduce the combination of foreign key values given the replacement value. A mapping function is selected such that the foreign key value combinations of multidimensional values that are conceptually related to each other map to values that are close to each other. The rows in the fact table are then stored within the fact table in the sorted order, thus causing values that are conceptually related to each other to be stored physically near each other within the fact table.