摘要:
A data model for accessing data in a relational database in an OLAP system utilizes a multiple-hierarchy dimension. The dimension includes a set of attributes. Each attribute is bound to a column in the relational database. A logical structure is defined, indicating the relationships between the attributes. Hierarchies are defined. Each hierarchy includes a sequence of attributes. A hierarchy provides a common drill-down path that a database user can utilize to access the database. A hierarchy can include a single attribute or a combination of attributes. Both the relationships between the attributes and the sequence of attributes in a hierarchy are defined independent of any restrictions associated with the database.
摘要:
A system and method for analytically modeling data with related attributes is disclosed. A single dimension is used to provide data according to each of the related attributes, and, thus, may be said to play the role of each related attribute depending on a received query. The measure of the analytical data model is tied to the dimension according to both data attributes to allow the measure to be analyzed by the dimension according to both attributes.
摘要:
A system and method for analytically modeling data organized according to non-referred attributes is disclosed. Data stored in a first and a second relational data table is analytically modeled in a data cube. The first table organizes a first type according to a first attribute. The second table organizes a second type according to the first attribute and a second attribute. A first measure is modeled according to the first type of the first table. A first dimension is modeled according to the first attribute of the first and second tables. A second dimension is modeled according to the second attribute of the second table. The first measure is tied to the first dimension according to the first attribute of the first table to allow the first measure to be analyzed by the first dimension according to the first attribute. The first measure is tied to the second dimension by, for each entry of the first dimension, allocating the entry to each entry of the second dimension in a predetermined manner.
摘要:
A method, system, and apparatus are provided for exposing and utilizing workbooks as server data sources. The system includes a client computer capable of executing a spreadsheet application program for creating a workbook including one or more worksheets. The workbook may be published to a server computer where the contents of the workbook are exposed as a multi-dimensional data source. The server computer allows client applications to discover and connect to the workbook as a multi-dimensional, data source, such as a cube.
摘要:
The subject disclosure relates to querying of column based data encoded structures enabling efficient query processing over large scale data storage, and more specifically with respect to complex queries implicating filter and/or sort operations for data over a defined window. In this regard, in various embodiments, a method is provided that avoids scenarios involving expensive sorting of a high percentage of, or all, rows, either by not sorting any rows at all, or by sorting only a very small number of rows consistent with or smaller than a number of rows associated with the size of the requested window over the data. In one embodiment, this is achieved by splitting an external query request into two different internal sub-requests, a first one that computes statistics about distribution of rows for any specified WHERE clauses and ORDER BY columns, and a second one that selects only the rows that match the window based on the statistics.
摘要:
Various technologies and techniques are disclosed for utilizing spreadsheet references with grouped aggregate views. A grouped aggregate view feature enables a user to create a grouped aggregate view of data. A calculation feature enables the user to calculations for the grouped aggregate view of data that are based upon relative or absolute references to data in the grouped aggregate view. Input is received from a user to write a calculation within a first cell in a grouped aggregate view. Input is received from the user to select a second cell to reference when writing the calculation. The user is presented with available references that are relevant to data contained in the second cell. Input is received from the user to select one of the available references that are relevant for the second cell. The selected one of the available references is placed into the first cell.
摘要:
Provided are systems and methods that facilitate direct write back in a multi-dimensional database. The system includes a delta cache component that receives a user request to change an original cell value and determines a delta value based at least in part upon the changed cell value. Also included is a write back partition component that selectively updates a data cell based at least in part upon the delta value without updating corresponding data cell values. The system and methods allow attributes to be added to any dimension of a cube without affecting the write back data. Adding, modifying or removing a hierarchy has no affect on write back data nor does deleting a dimension that is not referenced by a write back.
摘要:
A method, system, and apparatus are provided for exposing and utilizing workbook ranges as server data sources. The system includes a client computer capable of executing a spreadsheet application program for creating a workbook including a range that includes data objects. The workbook may be published to a server computer where the specified data objects are exposed as server data sources. The server computer allows client applications to discover and connect to the data objects contained within the workbook as server data sources.
摘要:
A system that facilitates analyzing content of a multi-dimensional structure comprises a calculation component that receives statements in a declarative language relating to one or more of an assignment and calculation and executes such statements against a multi-dimensional structure. A pass generation component creates a pass in order to maintain content of the multi-dimensional structure as it existed prior to execution of the statement, the pass is accessible upon reference to such pass.
摘要:
Various technologies and techniques are disclosed for utilizing spreadsheet references with grouped aggregate views. A grouped aggregate view feature enables a user to create a grouped aggregate view of data. A calculation feature enables the user to calculations for the grouped aggregate view of data that are based upon relative or absolute references to data in the grouped aggregate view. Input is received from a user to write a calculation within a first cell in a grouped aggregate view. Input is received from the user to select a second cell to reference when writing the calculation. The user is presented with available references that are relevant to data contained in the second cell. Input is received from the user to select one of the available references that are relevant for the second cell. The selected one of the available references is placed into the first cell.