pengertian query pada software aplikasi basis data

Ngày tải lên: 27/02/2014, 07:20

Ngày tải lên: 23/03/2014, 16:20

... it exposes. In database terms, this means that an API would expose public interfaces for retrieving data from, inserting data into, and updating data in the database. A set of database interfaces ... Software Development Methodologies for the Database World Databases are software. Therefore, database application development should be treated in the same manner as any other form of software ... it’s generally better to query for a product and all of its related data at once than to ask for the product, and then request related data in a separate query. Second, query tuning may be difficult...

Ngày tải lên: 05/10/2013, 08:48

... to Telecommunications, Winter 2000 Lecture 14 Communication Basics Part-2 The Theoretical Basis for Data Communication: Frequency-domain concept: A sine wave with a frequency of 1 kHz will ... Theorem: Mathematical guidelines have been established to determine the maximum theoretical data transfer over a channel based on the channel's bandwidth and Signal-to-Noise ratio. This ... fundamental laws used in telecommunications is Shanon's law. In 1948 Shanon proved that the maximum data rate of a noisy channel whose bandwidth is B Hz, and whose signal-to-noise ratio is S/N, is...

Ngày tải lên: 10/12/2013, 08:15

... customerId; // Create the DataSet. DataSet ds = new DataSet( ); // Create the SQL XML DataAdapter. SqlXmlAdapter da = new SqlXmlAdapter(cmd); // Fill the DataSet. try { da.Fill(ds); ... Method Description Fill Fills a DataSet with the XML data retrieved from the SQL Server database Update Updates the SQL Server database with the changes made to the DataSet For more information ... The default view of the DataTable is bound to the top data grid on the form. The DataGrid.CurrentCellChanged event handler is called to refresh the bottom data grid. DataGrid.CurrentCellChanged...

Ngày tải lên: 21/01/2014, 11:20

... using the DataSet directly. To execute an XPath query against the contents of a DataSet, call the SelectSingleNode( ) method of the XmlDataDocument for the DataSet, passing the XPath query as ... and Order Details data. If the Nested property were false, you'd have to use a second XPath query to retrieve the Order Details data from the XMLDataDocument for the DataSet. [ Team ... [ Team LiB ] Recipe 8.6 Using XPath to Query Data in a DataSet Problem You need to use an XPath expression to extract certain rows from a DataSet. Solution Use SelectSingleNode( ) or...

Ngày tải lên: 26/01/2014, 10:20

... need for cross -software exchange leads to a collaborative approach throughout the business. v Real time and corporate software The illustration figure 17 shows the most common software used in ... Pro software workshop has already been described so we will devote the next paragraph to UAG and how it works. 10 A Fig . 18 The two platfor ms UnityPro and UAG Summary10. Data treatment and software 233 1 2 3 4 5 6 7 8 9 10 11 12 M 10.1 ... 10.4 Application categories 10. Data treatment and software 244 It also includes: - symbolic variables independent of the physical memory; - structured user-defined data types (DDT); - DDT and...

Ngày tải lên: 15/02/2014, 08:54

... Some NoSQL database management systems are beginning to support synchronization of data between mobile devices and database clusters deployed in a data center (or “in the NOSQL DATABASE TECHNOLOGY © ... Denormalizing Before storing data in an RDBMS, a schema must be created dening precisely what data can be stored in the database and the relationships between data elements. Data is decomposed into ... their own database technologies. These “NoSQL” databases, each eschewing the relational data model, are a far better match for the needs modern interactive software systems. NOSQL DATABASE...

Ngày tải lên: 19/02/2014, 12:20

... Q’’ union Q P1 P2 P3 union Q join Q’ Q’’ query shipping data shipping Q Q P3P3 P1 P2 P4 P1 P2 P4 ch1 ch2 ch2 ch1 Fig. 8. Data and Query Shipping Example of Figure 8 we can see the data shipping alternative, ... Query Plans for Data Integration. In Proceedings of the 18th IEEE Conference on Data Engineering (ICDE) 13. Franklin MJ, Jonsson BT, Kossmann D (1996) Performance Tradeoffs for Client-Server Query ... consumed by the P2P system. 2.3 Query Routing and Fragmentation Query routing in SQPeer is responsible for finding the relevant to a query peer views by taking into account data distribution (vertical,...

Ngày tải lên: 19/02/2014, 12:20

... the query are: • Word-stem overlapping with the query. • Three boolean features indicating whether the sentence contains a subject, object or indirect object dependency in common with the query. • ... annotation, and semantic analysis. The same tools are used for the linguistic processing of the query. Using these data, a semantic representation of the sentence is produced, that we call environment. ... positive (i.e. contain relevant data) or negative (i.e. irrelevant for the summary), so they are not yet labeled. Finally, an SVM is trained, as follows, on the annotated data. Linguistic preprocessing...

Ngày tải lên: 20/02/2014, 12:20

... request cost of an operation, and Query 5 Query 7 Query 8 Query 9 Queries 0 1 2 Average Scaled Cost (i) 2PO IDP(4) IDP(3) IDP-M(4,5) IDP-M(3,5) Query 5 Query 7 Query 8 Query 9 Queries 0 1 2 Average ... by Exhaustive and IDP(3) for Query 7, (ii) Plan chosen by IDP(4) Query Ave % Comm Cost (Std. Dev.) Query 5 2% ( 1.7%) Query 7 4.6% ( 3.6%) Query 8 1.5% ( 1.15%) Query 9 5.7% ( 4.8%) Table 4. ... sampling method of es- timating local cost parameters in a multidatabase system. In ICDE, 1994. Query 5 (Q5) Query 7 (Q7) Query 8 (Q8) Query 9 (Q9) select * from customer c, orders o, lineitem l,...

Ngày tải lên: 07/03/2014, 14:20

... chain Storing of datasets (database) Networking of databases Database review and validation Unit process database development Raw data collection Raw data collection - extended Raw data collection ... and recommended, on both datasets and raw data. In particular, validation may precede the review when the database manager determines that the data- set conforms to the database protocol, which ... Flow of Data Relationships exist among processes that act on data as they flow from raw data sources to users (Figure 1.2). Note that the diagram shows activity related to data and datasets...

Ngày tải lên: 07/03/2014, 23:20

... then executed. A queryin simplified MMAXQL consists of a sequence of query tokens which are combined by means of relation operators. Each query token queries exactly one basedata element (i.e. ... basedata element (i.e. word) or one markable. 3.1 Query Tokens Basedata elements can be queried by matching reg- ular expressions. Each basedata query token con- sists of a regular expression in ... for their query. Instead, users should be allowed to relate markables from all levels in a fairly unrestricted andad-hoc way. Since queryingis thus considerably simplified, exploratory data analy- sis...

Ngày tải lên: 08/03/2014, 04:22

... pat- terns in annotated sentences. We will dis- cuss the content and format of the data re- leases and how the software and data can be used by other NLP researchers. 1 Introduction FrameNet 1 (Fontenelle, ... corpora. An interim version of the FrameNet data was released in October, 2002 and is be- ing widely used. A new, more portable version of the FrameNet software is also being made available to researchers ... The FrameNet Data and Software Collin F. Baker International Computer Science Institute Berkeley, California, USA collinb@icsi.berkeley.edu Hiroaki...

Ngày tải lên: 08/03/2014, 04:22

Ngày tải lên: 08/03/2014, 18:20

Ngày tải lên: 08/03/2014, 21:20

Ngày tải lên: 14/03/2014, 12:20

Ngày tải lên: 16/03/2014, 16:20