摘要:
Middleware is integrated within a database engine. The middleware is to execute a functional-form query representing a dataflow graph comprising queries and relation valued functions. The middleware is to interact with the database engine to cause the database engine to execute the queries. Each relation valued function receives a plurality of first relations as input and generates a second relation as output.
摘要:
A computer-executable method receives at least one query that specifies requests involving blocks of data. Based on information associated with at least one query, a sequence is identified relating to an order in which the blocks are to be retrieved into a storage for processing the requests. An output is provided for the at least one query based on retrieving the blocks into the storage according to the identified sequence. According to another implementation, a method includes caching blocks of data associated with processing a database query in a temporary storage, and replacing at least some of the blocks of data in the temporary storage using a first replacement algorithm this is based on information associated with processing the database query, and where the first algorithm is different from a second replacement algorithm used by an operating system of the database system.
摘要:
A collaborative business process for modeling inter-enterprise collaboration (e.g., peer-to-peer (P2P) or business-to-business (B2B) interaction) that involves at least two players from two different enterprises is defined. The collaborative business process has a plurality of work nodes. Each work node has a task-role identifier for identifying a particular player to execute each node. A first collaborative process manager (FCPM) associated with the first player is provided to execute a first instance of the collaborative business process. A second collaborative process manager (SCPM) associated with the second player is provided to execute a second instance of the collaborative business process.
摘要:
A method and system for analyzing web access. First, a plurality of web log records are received. Next, multi-dimensional summary information is generated based on the web log records. Then, derivation and analysis are performed to discover usage patterns and rules for supporting business intelligence by using the multi-dimensional summary information.
摘要:
Systems and methods of block computation are disclosed. An example of a method includes buffering a plurality of tuples in a build phase. The method also includes, after buffering a last of the plurality of tuples, applying a computation to all of the buffered tuples in a compute phase. The method also includes returning results of the computation one tuple at a time to a query processing pipeline in a stream-out phase.
摘要:
A client computer buffers a continuous flow of streaming data during a sliding window that is defined by a time boundary. The client computer processes a query on a portion of the streaming data buffered during the time boundary of the sliding window and a portion of the streaming data stored in a data warehouse.
摘要:
Methods for generating a query input string include sorting a first input relation and a second input relation in order from the first relation to the second relation. The second input relation is concatenated to the first input relation, and the concatenated input relations are stored in a single string.
摘要:
Multi-stream analytics is disclosed. An example method of multi-stream analytics with a query engine includes punctuating unbounded streaming data into data chunks, each of the data chunks representing a bounded data set in the unbounded streaming data. The method also includes processing one of the data chunks. The method also includes rewinding a query instance for processing another of the data chunks.
摘要:
The present application is directed to a data management system. The data management system is implemented within a computer system that includes one or more processors, one or more electronic memories, and a memory-mapped file facility that electronically stores data. The data management system, implemented by data management system control routines that are executed by the one or more processors, retrieves a particular projection of a multi-level, multi-dimension data set stored within the ONP-tree data structure that contains the multi-level, multi-dimension data set.
摘要:
A method of generating discrete event simulation data using a query is provided herein. The method includes retrieving a trajectory specifying a service access event for a customer accessing a service in a simulation. The method also includes processing, in a relational database query, one or more pending events corresponding to one or more customers accessing the service before the customer. Additionally, the method includes processing, in the relational database query, the service access event. Processing the service access event occurs after processing the one or more pending events. The method also includes providing a result for the relational database query. The result comprises the trajectory, and the one or more trajectories.