摘要:
Facilitating the searching of structured documents by identifying multiple element paths corresponding to multiple elements included in multiple structured documents, and for each of the element paths providing, for inclusion in a first searchable data structure, the element path exclusive of a value of the element corresponding to the element path and exclusive of an identifier of the structured document including the element corresponding to the element path, and providing, for inclusion in a second searchable data structure, the element path in association with a value of the element corresponding to the element path and in association with an identifier of the structured document including the element corresponding to the element path.
摘要:
A method and apparatus, and article of manufacture are provided to process an abstract query of a database abstraction constructed over an underlying physical data storage mechanism. The database may comprise a single data source, or a federated source spanning multiple systems. Embodiments of the invention process an abstract query by generating an intermediate representation of the abstract query. In one embodiment, the intermediate representation comprises an abstract query plan. An abstract query plan includes a combination of elements from the data abstraction model and elements relating to the underlying physical data storage mechanism. Once generated, a back-end component may easily traverse the abstract query plan to generate an SQL statement (or other resolved query) corresponding to the abstract query. Further, once constructed, the abstract query plan provides a platform for many different optimizations that may be selected by a user or by the runtime component inspecting the abstract query plan prior to creating the resolved query.
摘要:
A client accepts 20 an input query, rewrites 22 the query and forwards 24 the query to a database server, which returns 26 results which are then rewritten 28. The database includes classes arranged hierarchically as superclasses and subclasses, and/or properties also arranged hierarchically as superproperties and subproperties. In embodiments, the query is rewritten 22 to replace each instance of each class and each property in the input query with the transitive closure of the respective class or property. The client allows inferencing whether or not this is supported by the database server.
摘要:
A system and a method of querying a remote service without revealing a private document to the remote service are provided. The method includes receiving a signature of a user's private document, and querying an intermediate database with the signature of the private document to generate an intermediate result set comprising intermediate database documents, based on a computation of similarity of the signatures of the intermediate database documents to the signature of the private document. The remote service is queried, based on the intermediate result set and a final result set is received from the remote service based on the query, which can be output to the user or further processed.
摘要:
In one embodiment the present invention includes an OLAP execution model using relational operations. In one embodiment, the present invention includes, a method comprising receiving a first query in an online analytic processor (OLAP) executing on one or more computers, the OLAP generating and comprising a model specifying a graph defining a plurality of nodes and a plurality of tiers, each node corresponding to a different operation on data. A second query is generated by the OLAP. The second query includes a plurality of layered subqueries each corresponding to one of the nodes in the graph for specifying the different operations on data. The second query is received in a relational engine coupled to the datastore. The relational engine executes the second query, and in accordance therewith, retrieves data.
摘要:
Determining metadata associated with a graph-based computation includes functionally transforming metadata associated with a first portion of a graph to generate transformed metadata associated with a second portion of the graph; determining a third portion of the graph related to the second portion of the graph; and propagating the transformed metadata from the second portion of the graph to the third portion of the graph.
摘要:
A utility is provided for generating applications for a variety of data conversion or handling application environments. A user can use a graphical user interface to purpose application adaptable modules to define a desired application. In one implementation, the user interface (1500) includes a node tree panel (1502) and a process assembly panel (1504). The node tree panel (1502) lists tool sets (1508) including transformations, maps and input-output tools. These tools can then be assembled together with identified data sources and then elements using the assembly panel (1504) to define an application. In this manner, an application is generated from a number of generic modules simply by linking the modules to perform a purpose of the desired application. In this manner, an application is generated from a number of generic modules simply by linking the modules to perform a purpose of the desired application.
摘要:
Pursuant to receipt of a data modification command or statement, such as an Update command, it is determined which fields in a data structure, such as a UDT, computed column, indexed view, or index, for example, will be changed as a result of the command. Only those fields that are affected by the command will be changed. Thus, changes are propagated to only to those dependent data structures whose content is being modified. Tree representations are used to facilitate the determination as to whether a subfield in a hierarchy is changed.
摘要:
Determining metadata associated with a graph-based computation includes functionally transforming metadata associated with a first portion of a graph to generate transformed metadata associated with a second portion of the graph; determining a third portion of the graph related to the second portion of the graph; and propagating the transformed metadata from the second portion of the graph to the third portion of the graph.
摘要:
Techniques for object relational mapping in database technologies are described herein. According to one embodiment, in response to a query statement for accessing a relational database, a syntax tree is generated to represent semantic information of the query statement, where the query statement has a boolean parameter and is implemented as an SQL object. A data type of the boolean parameter is predicted based on the semantic information obtained from the syntax tree in view of a structure representing the syntax tree. The boolean parameter is configured to be either a numeric value or a string dependent upon metadata used to map the SQL object to the relational database. Other methods and apparatuses are also described.